Pregnant Mother Shot Dead, Victim of Random Halloween Violence

— -- The hunt is on for suspected gang members who may be responsible for the random killing of a pregant woman trick or treating with her three small children Wedneasday night.

Leticia Barrera, 38 years old and seven months pregnant, was accompanying her children, ages 3, 5 and 7, when she was struck in the head by what police believe was likely a random bullet. The children were not hurt in the shooting.

"All I heard was four gunshots," Anna Rega, a witness to the crime, told ABC News' local affiliate. "Then I called the cops. I called the police on my cell phone. I told them there was shooting. And then everybody just started coming."

Police told the affiliate they are searching for two young men wearing hooded sweatshirts. The men, possibly in their teens, may have been targeting rival gang members when the stray bullet hit.

Barrera likely was caught in the middle of the gang gunfire, police said, when the shots were fired apparently a half a block away.

"I think all this gang violence needs to stop. A bullet does not have no name. It can shoot anybody. It can shoot you, me, anybody," Rega told the ABC affiliate.

Investigators will also turn to surveillance images from a police camera for clues into the identity of the suspects.

"Our information at this time is the shooters were directly in this area, so we are going to send the tape in now to see if we can get an identification of the shooters," Capt. Ed Griffin, a spokesman for the Chicago Police Department, said.

Barrera's children are staying with relatives.

No one was in custody for the shooting, which occurred shortly before 6 p.m. Wednesday in the 4800 block of South Seeley Avenue, an area known for gang activity, police said this morning.

The victim, Leticia Barrera, 38, had just returned to her home with her three children, ages 2, 5 and 7, and was standing out front when shots rang out from about a half a block away, police said. She was hit in the head by gunfire but was not the intended target, according to police. The children were not hurt.