Assailant sought in Chicago shooting that left 6 wounded

At least six people were injured, two critically, early Sunday when an assailant opened fire on a crowd gathered outdoors in a Northwest Side neighborhood of Chicago, according to police.

The drive-by shooting in the Humboldt Park neighborhood unfolded around 2:09 a.m., the Chicago Police Department said in a statement.

"While outside, an unidentified offender discharged a firearm, which struck multiple victims," police said in the statement. Two women and four men, ranging in age from 33 to 46, were taken to area hospitals with gunshot wounds, police told ABC News.

One victim, a 35-year-old man, was shot multiple times and was in critical condition at Advocate Illinois Masonic Medical Center in Chicago as of late Sunday morning, according to police. A 36-year-old man also was shot multiple times and was in critical condition at Mt. Sinai Hospital, police said.