TINLEY PARK | Authorities say they've worked closely with the sole survivor of the shootings at a suburban Chicago Lane Bryant store to develop a new sketch of the gunman.

Tinley Park police released the computer-generated sketch Tuesday and posted it on the department's Web site.

Police Cmdr. Rick Bruno says the new sketch doesn't change any of the gunman's physical traits from a previous composite drawing. But the computer rendering is more lifelike and seems 3-dimensional.

Authorities are still searching for the man they say fatally shot five women during a botched robbery on Feb. 2.

The Illinois State Police developed the new composite sketch.

Police say they have no new developments in the case.