[Updated 6:10 p.m.] Suspected shooter Radcliffe Haughton has been found dead from an apparent self-inflicted gunshot wound, Brookfield police Chief Daniel Tushaus said. He was found inside the salon where the shooting occurred.
[Updated 5:38 p.m.] Froedtert Hospital - the Milwaukee medical facility where four shooting victims are being treated - has "resumed normal operations" after earlier being placed in lockdown mode, the hospital said on its website.
"We are certain that our environment is safe," the hospital said in an update published at 4:25 p.m. CT.
[Updated 5:20 p.m.] President Barack Obama learned of the shooting around 12:30 p.m. CT from homeland security adviser John Brennan and then had a follow-up call an hour later involving, among others, FBI Director Bob Mueller, a White House statement said.
"The president was informed that the shooting did not appear to be terrorism-related," the statement said.
Earlier, Wisconsin Gov. Scott Walker offered '"our thoughts and prayers to the victims" and "the law enforcement and community support they need to heal in the coming days."
[Updated 4:56 p.m.] Authorities working to clear the building where Sunday's bloody shooting took place "believe we have identified what is being described as an improvised explosive device," Brookfield police Chief Daniel Tushaus said.
The device is "hampering our clearing of that building," the chief added.
[Updated 4:41 p.m.] Authorities "believe" three of the seven people shot Sunday have died, according to Tushaus.
The shooting took place around 11 a.m. CT (noon ET), the chief explained.
Authorities have been able to track down a 2003 Mazda Protege linked to the suspect - which was found outside the city of Brookfield - but the suspect remains at large. He's been identified as Radcliffe Haughton, who Tushaus said weighs 270 pounds and stands just over 6 feet tall.
[Updated 4:10 p.m.] Bomb squad personnel are at the scene of the shooting, Brookfield police Lt. John Beth said, pointing to concerns there may be explosives at the site.
[Updated 3:42 p.m.] ATF spokesman Thomas Ahern identifies the suspected shooter as Radcliffe Haughton, 45, of Brown Deer, Wisconsin. The shooting is being investigated as a possible domestic-related incident, according to Ahern. The suspect remains at large.
[Updated 3:29 p.m.]ATF spokesman Thomas Ahern confirms to CNN that seven people were shot by a lone gunman at the Azana Hair Salon and Spa. "Employees said a man entered the salon, workers saw a firearm - a handgun of some sort," Ahern told CNN's Susan Candiotti. "An employee said to the gunman something like, 'If you're gonna rob the place, rob the place,' and then (the gunman) opened fire."[Updated 2:24 p.m.] FBI and ATF agents are among the authorities at the scene, CNN affiliate WISN reports.
[Updated 2:07 p.m.] The nearby mall and some other buildings are on lockdown, CNN affiliates report.
[Updated 1:56 p.m.] CNN affiliate WTMJ reports authorities are looking for a suspect.
[Updated 1:54 p.m.]Â CNN affiliate WISN reports that a witness described seeing two women leaving the spa, apparently injured. Â One crawled out and was taken by emergency responders. Â The other was treated by emergency personnel in a squad car.
[Updated 1:32 p.m.] Hospital spokeswoman Nalissa Wienke tells CNN all four people in the emergency room appear to have non-critical injuries.  She could not say whether the injuries were due to gunshots.  At this time, the hospital does not believe it will need more staff, she said.
[Updated 1:28 p.m.]Â Numerous emergency vehicles are at a spa in Brookfield, Wisconsin, as local news agencies report a shooting took place.
Four people are in an emergency room, and another three are on their way, said Beth Strohbusch of Froedtert Hospital in nearby Milwaukee.
CNN affiliate WTMJ says the Waukesha Sheriff's Department confirmed there was a shooting, and that witnesses say it was either at or near the Azana Salon and Spa, which is across the road from Brookfield Square Mall.
CNN affiliate WISN called it a "mass shooting."
FULL STORY
This is so nuts. This is my spa. It's in a great area. I was due for a pedicure, my gym is nearby. I easily could have been there. The staff there are awesome. I feel so bad or all the victims. It's inconceivable anyone can think shooting people like thus s a good idea.
Attention everyone: Guns don't kill people. People kill people. That's why we should make guns easier to access, so mentally ill people and criminals can kill people easier. Anything else is un-American.
It seems as if there is a mass shooting every month now. Most of these shootings have been commited by citizens who purchased there weapons legally. Yet, NRA nutjobs still claim that there need to be more guns.
I am a cat, therefore you troll is irrelaphant.
It's not a gun issue; It's a cultural issue. If it were just a gun issue, then these kinds of random mass shootings of strangers would be commited just as much by all cultural and ethnic groups as a proportion of population. But they're not. They're commited by people who are socially isolated and emotionally repressed from cultures that allow for or encourage social isolation and emotional repression (anglo-saxon protestant & Asian-American). You almost never see a black person commiting this kind of crime because they're almost never emotionally repressed and isolated.
I didn't say white people didn't.. I'm just saying how come all you sheep on her IMMEDIATELY blame the right wingers? More gang related shootings happen every day but you don't hear about them on CNN.....
Stop with this whole.. anti-NRA BS
Name one NRA member in the last 20 years that has committed a MASS SHOOTING crime?! I can sit there and name at least 4 left wingers that have...
Don't forget to add that over 2000 people will log onto news comments sections today to demonstrate their 2nd grade level English skills.
Guns should be illegal. Only police should have guns
Yes. In fact police should be given absolute power because they never abuse their power.
JamesFLA: I hope you are smart enough to detect the sarcasm in TheBob's comment.
Bad guys will always have guns. Always. it doesn't matter what the law is.....they are bad people. Restrictions only keep good people from having guns. geez ~ so simple.
geez – so oversimplified.
Yeah, and when rocket launchers are outlawed, only outlaws will have rocket launchers!
Thank God our right to bear rocket launchers has not been infringed upon, because I fear the day Obama succeeds in making it illegal to own and hunt with one, or use it for my own personal protection! Lord knows when rocket launchers are illegal to own, there will surely be a rash of killings committed with them by criminals, because only criminals will have them! So simple ...
Right away this goes to politics. Also it said NOTHING about being a black person! Read the facts!
It was Paul Ryan. He thought it was hunting season but was confused about where he was.
He knew where he was. He was hunting 'varmints'
There are illegal Mexicans in Wisconsin?
Let's hear it for The NRA Guns, Guns, Guns for everyone. Wake up America everyone can't have guns.
You're right, and nobody, not even the NRA is saying that "every one" needs a gun.
But there ARE violent people, crazy people, and criminals among us. Luckily, they are in the minority.
Well, looks like someone was having a bad nail day.
Lets go back to when you are found guilty for murder (any murder... guns, knives, poison, ect.) you are put to death within days. You didn't get second and third chances and didn't get years on death row to suck tax dollars away. MAYBE some of these crazys will think twice.
Do "crazies" really think?
So you think someone that is about to go on a rampage will decide not to because he is afraid of the death penalty? Most people that do things like this are doing this AS their death sentence.
Terrible tragedy. I wonder if Paul Ryan would rethink his position on gun laws knowing that these tragic events DO happen everywhere, including Wisconsin.