FORT BEND COUNTY, Texas – A man has been booked into the Fort Bend County Jail on suspicion of murder after his girlfriend was shot to death Monday in Fort Bend County, according to authorities.

Brandy Cano, 22, was killed during a domestic disturbance with her boyfriend, Santana Losoya, at their residence in the 6900 block of Pleak Crossing, officials said.

In Sky2 video, Losoya was seen having his hands tested by authorities.

Fort Bend County Sheriff Troy Nehls said the argument between Cano and Losoya, 24, turned physical and a handgun was fired. A bullet struck and killed Cano. She was found dead in a bedroom.

Nehls said Losoya was detained at the scene. Losoya told investigators that during the argument, he reached for a gun because he wanted to leave and the gun went off.

Nehls said Losoya and Cano have a 3-year-old daughter together, but the child wasn't at the residence at the time of the shooting.

Investigators said Cano's grandmother called police.