A Florida mom suspected of shooting and killing her stepfather and her 7-year-old daughter was arrested, police said.

Alyssa Marie Torres, 29, was apprehended around 10:30 a.m. Monday, hours after a double homicide at a Port St. Lucie apartment complex, according to local police.

The victims were identified as her young daughter, Amarilyss Martinez, and stepfather, 54-year-old Felix Rivera, news station WPTV reported.

Her mother, 53-year-old Marisol Rivera, was also injured in the shooting and brought to the hospital.

“It doesn’t make any sense. We’re trying to figure it out ourselves,” Veronica Martinez, the slain child’s half-sister, told WPTV.

Torres was believed to be “armed and dangerous” after fleeing early Monday in a 2005 Toyota Rav4, police said.

Port St. Lucie police spokeswoman Lisa Carrasquillo said a motive hasn’t been determined.

“Torres has been transported to the Port St. Lucie Police Department to be interviewed by detectives,” police said Monday in a Facebook post.

No charges against the mom were immediately announced.