STATEN ISLAND, N.Y. - A man is in custody after a Staten Island woman believed to be the mother of his children is shot and killed inside her home early Thursday morning.

Sources tell NY1 the shooting may have stemmed from a domestic dispute.

Police say the victim's teenage son and stepson were in the home when the 38-year-old woman was shot in the head in a home located at 143 South Avenue in Mariners Harbor.

Police say a 40-year-old man is in custody and being questioned by police, but they have not released his name.

His relationship with the victim is not confirmed, but he is believed to be the father of one of the children.