A man is facing a charge of first-degree murder in the death of his 2-month-old son.

Fayde Riggin, 22, was charged Monday with killing Mavrik Riggin, said Sgt. Chris Widmer, a Tucson Police Department spokesman.

Riggin, who was booked into the Pima County jail, is also facing a child abuse count, Widmer said.

On Aug. 12, police were called to the 1200 block of South Turquoise Vista, south of East 22nd Street and east of South Kolb Road, for a report of an unresponsive infant boy, Widmer said.

The child was taken to a hospital with life-threatening injuries, Widmer said.

He said the hospital later contacted police and told them the injuries to the child were nonaccidental.

During the investigation, detectives found out that the boy’s father had recently moved back into the home with the mother and the baby.

Investigators say the father grew frustrated with the baby and shook him several times over the course of a month, Widmer said.

Mavrik sustained serious internal injuries from being shaken, Widmer said.

Widmer cautioned that it only takes a few seconds of shaking to cause permanent damage to a baby.

If a baby does not stop crying, the child can be put in a crib, and the caretaker can take a short break to calm down, Widmer said.

Contact reporter Carmen Duarte at cduarte@azstarnet.com or 573-4104.