PHILADELPHIA (CBS) — A 6-year-old boy is fighting for his life Friday morning after he and three men were shot multiple times in Philadelphia’s East Germantown neighborhood.

Investigators say assault weapon style shell casings, traced to different assault style weapons, littered the scene in the 5500 block of West Clarkson Street.

The shots rang out just before 11:30 p.m Thursday.

The 6-year-old boy was shot in his chest and arm and transported to St. Christopher’s Hospital after undergoing emergency care at Einstein Hospital. He was one of 4 people gunned down.

Police say two of the four shooting victims were found in the front seats of a gray Pontiac. One, the 6-year-old boy, and the other a man age 29. The 29-year-old was shot in his chest, stomach, both arms and one leg. He is now in critical condition at Einstein Medical Center.

Police say they were likely in route to the hospital but police wound up getting them there. Two other men ages 29 and 32 were shot as well, one in his arm, the other in his leg. They are said to be in stable condition.

At this time police say they are not sure if any of those men shot were shooters themselves.

“It appears that this was definitely an ongoing battle. There were casings in the street, on both sides of the sidewalk. So it appears that there were multiple armed combatants out here and that they were actively engaged,” said Philadelphia police Captain Anthony Ginaldi.

Multiple houses and vehicles in the area were hit with gunfire.

Police hope surveillance cameras in the area will help to fill in some gaps as to what happened.

This is the second child someone shot in this neighborhood this week.

A 6-year-old girl is still recovering after she was shot in her arm Tuesday night about a mile away on the 6300 block of North Woodstock Street.

Police say it was one of 21 shots fired.

Investigators are still searching for a suspect.