A New Mexico man has been charged with shooting and killing his niece despite his mother’s attempts to wrestle the gun away from him.

Marvin Martinez, 55, was arrested in Albuquerque and charged with murder for killing his 20-year-old niece, Ashley Raulerson.

Martinez’s mother told police she witnessed the incident, saying Martinez walked into a bedroom, pulled out a shotgun and shot Raulerson twice while she was on the couch. The mother could not give police a reason for him shooting his niece, but said she wrestled the gun away from her son before he took off and drove to another family member’s home.

According to KOAT 7, the family member is a female officer with the Albuquerque Police Department.

As family called police, Martinez took off again.

Realizing police had blocked off the area, Martinez came to a screeching halt, judging by the black marks on the road left by his tires, and took off on foot.

After failed attempts to hide between cars, Martinez is said to have surrendered peacefully.

No motive has been given, but police say Raulerson’s mother was called earlier that day and was told Martinez was “acting crazy.”

He was also described as a veteran taking a number of prescription drugs.