[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.

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