Police in Florida arrested a 29-year-old man after he allegedly stabbed his ex-girlfriend to death in her car in Miami.

The Miami-Dade Sheriff’s Office said in a press release it began investigating shortly before 4 p.m. Saturday when the grandmother of a 3-year-old flagged a deputy down in the area of Southwest 144th Street and Southwest 134th Avenue. The girl had been walking alone in the residential complex. She had what appeared to be dried blood on her face and clothing, cops said.

More from Law&Crime: ‘This is how ruthless these kids have become’: 20-year-old murdered over ‘perceived slight’ in rap video, cops say

Deputies went to the girl’s home in search of her mother but she wasn’t there. During a search of the area, cops found the mother’s vehicle and found her unresponsive with apparent stab wounds. Paramedics responded to the scene and pronounced the woman, later identified as 24-year-old Maria Camila Garcia-Molina, dead.

Through “investigative means,” cops arrested 29-year-old Joy Chandra Nath on charges of second-degree murder and child abuse.

Local NBC affiliate WTVJ obtained an arrest report that further detailed the incident. It said deputies found Garcia-Molina’s body covered in blankets in the passenger seat of her car. She suffered from stab wounds on her neck, torso and other extremities. Deputies reportedly believe the girl was with her mother at the time of the murder. The girl told deputies that her mother was hit in the head and was sleeping, according to the affidavit. It did not appear the girl suffered any physical injuries in the incident.