SIMI VALLEY, Calif. – A gunman opened fire inside a busy dental office in an apparent domestic dispute Wednesday, killing one woman and critically wounding three others, police said. A fourth person was grazed by a bullet.

The suspect — wearing shorts, no shirt and with a shaved head — barricaded himself inside the Family Dental Care office, police Sgt. Karl Becker said. He surrendered after a hostage negotiator coaxed him out about an hour after the shootings.

Detectives did not release a motive or identify the suspect. But the Ventura County Star newspaper reported that a dental office worker said the gunman was married to the slain victim.

In the minutes after the attack, police evacuated more than a dozen people from the dentist's office and a chiropractic office next door, including two children who witnessed the shooting.

May she RIP and may the Lord be with the survivors.