A New Mexico man is in custody after authorities say he fatally shot his 9-month-old daughter after an argument with the infant's mother.

Police say 22-year-old Christopher Rains of Albuquerque and the baby's mother, 18-year-old Ashley Trujillo, got into a heated argument Tuesday at an Albuquerque home over whether Trujillo was involved with another man.

Police allege Rains pointed a pistol at the baby's head and pulled the trigger. Rains then allegedly asked Trujillo whether her seeing another man was worth it.

Authorities say Rains then called 911. He was taken into custody when officers arrived at the house.

It was unknown if Rains had an attorney.