May 5th, 2010
02:32 PM ET

New sketches released in hunt for 'Grim Sleeper' serial killer

Police released these three composite sketches showing what the "Grim Sleeper" serial killer may look like today.

New composite sketches have gone up on billboards across Los Angeles as police intensify their hunt for the “Grim Sleeper,” a serial killer suspected of murdering 11 women since 1985.

“It’s just another creative effort to try to shake loose some information because we believe he’s still around and in the southern L.A. area,” said LAPD Det. Dennis Kilcoyne, who has been tracking the case for years.

Kilcoyne said police have been flooded with calls since the new billboards and sketches went up, but they've had no concrete leads. Kilcoyne said regular sightings are expected when new sketches go up, and he hopes one of them could lead them to their man.

For two decades the “Grim Sleeper” – nicknamed for the length of time between his attacks – has been targeting black women, some who worked as prostitutes, police say.

Examine CNN's interactive evidence case file on the "Grim Sleeper"

FULL POST