UTICA -- A Utica man is facing child endangerment and drug charges stemming from an school bus incident involving his own son.

Around 4:30 p.m. Friday, police say a Birnie Bus employee tried to drop off a 4-year-old son to his father at 1 Minot Place.

Police say 31-year-old Gary Kingsley usually comes out to take his son off the bus, but Friday he wasn't waiting for him. Police say the bus monitor walked the child to the door, walked him inside the house and told Kingsley he was dropping the boy off.

When the bus monitor started walking back to the bus, police say she saw the boy running out of the house, crying and afraid. Police say Kingsley picked the boy up and brought him back to the bus, kissed him and walked back inside the house.

Police say Kingsley then came back out of the house and told the bus employee that the child wasn't his. Witnesses say Kingsley was staggering and stumbling and appeared to be high on drugs.

When police arrived on the scene, they say he was angry and appeared to be under the influence of both alcohol and drugs. Kingsley told police he also had a 2-year-old daughter inside the house. When officers went to check on the little girl, they say they saw marijuana, crack cocaine, bag of cocaine, glass smoking device, drug packaging materials and scales, numerous prescription pills and numerous bottles of alcoholic beverages. The girl was sleeping in her crib with a diaper full of feces. Police say it appears she was laying in it for quite some time.

Child protective services were notified and the grandparents took custody of the children.

Kingsley is charged with criminal possession of a controlled substance, endangering the welfare of a child, criminally using drug paraphernalia and unlawful possession of marijuana.