A man armed with grenades went on a shooting rampage in Texas and killed his ex-girlfriend and her daughter in Dallas before moving on to DeSoto and killing two more people.

Four others were injured Wednesday night in the Texas shooting spree, which ended after authorities arrested suspect Erbie Bowser, 44, at the scene of the second shooting incident.

Bowser allegedly started his shooting rampage at 10:30 p.m. Wednesday, when he entered a Dallas home and killed two people and wounded two others, according to the Dallas Morning News.

Dallas ABC affiliate WFAA identified the victims in the Dallas shooting as 43-year-old Toya Smith and 17-year-old Tasmia Allen. Relatives told the television station that Smith was Bowser’s ex-girlfriend.

Smith’s mother, Lurlean Smith, told NBC Dallas that it appeared that her family tried to escape the shooting.

"Her door was open, the car was open, evidently they were trying to get away." Lurlean Smith said of her granddaughter, Mia Allen.

Smith’s family said Bowser was “sometimes violent,” according to the Associated Press. Reports differed as to the relationship between Smith and Bowser, with the AP reporting that the couple was not broken up. Both WFAA and the Morning News reported that the couple was not together at the time of the shooting.

After shooting up the Dallas home, Bowser allegedly headed for the suburb of DeSoto, where he tossed a grenade and entered the home after the explosive detonated, according to WFAA. He then went inside and shot four people.

The home is reportedly owned by Boswer’s ex-wife, according to the television station. It was unclear whether she was among the victims in the Texas shooting spree.

NBC Dallas identified two of the DeSoto victims as two boys, ages 11 and 13, but police did not indicate if they were among the deceased.

A 3-year-old child was unharmed during the DeSoto shooting and was taken away by Child Protective Services, according to the AP.

Bowser was arrested at the property after running out of ammunition. He pretended to be among the victims when police arrived, but authorities quickly surmised that he was a suspect, according to the Morning News.

Boswer is currently being held at the DeSoto Jail. He has yet to be charged in the shooting spree, according to NBC Dallas.