Man fatally shoots woman at Antioch Quick Stop store

ANTIOCH, Calif. (KGO) -- Antioch police are investigating after a man allegedly fatally shot a woman and injured a clerk at a convenience store early Monday morning.

It happened at 7 a.m. at the Quik Stop on Tragallas Road.

Officials said a 27-year-old clerk may have stepped in to help, and got shot in the process.

The clerk is recovering in the hospital after being shot in the forearm.

"All I did was I saw him on the gurney getting loaded into the ambulance, that was the first I saw he was shot," witness Thomas Payne said.

Payne was terrified when he saw his son, Tom Jr. wounded as he left the Quik Stop where he worked as a clerk.

Police said Cynthia Flores-Crose, 27, walked into the store and was confronted by a Thomas Williams Jr., 34, with a gun who fired his gun, killing her. "I just know that one lady was killed, and my son was shot in the arm, and he had blood all over his hands that wasn't his," Payne said.

Williams Jr. turned himself in at the Antioch Police Department a short time later.

Police believe it may have been a domestic dispute and witnesses said Williams Jr. was Flores-Crose's boyfriend. "The man and woman got into it, and he seen it and tried to help. That's when suspect shot his girlfriend and then shot Tom," witness Valerie Hernandez said.

His father isn't surprised. "He would have tried to help her I'm sure, that's who he is, he would have tried to help her," Payne said.

Police are looking for information and witnesses to the crime.