WASHINGTON, Mo. (AP) — Police in eastern Missouri say a 13-year-old boy has died of a drug overdose during a sleepover at a friend's house over the weekend, and three adults at the house have been arrested.

The St. Louis Post-Dispatch reports that the police were called to a home in Washington around 9 a.m. on Sunday and found the boy dead in his 12-year-old friend's bedroom.

The 12-year-old told investigators he and his friend had been experimenting with drugs they found in the house.

Police arrested the 12-year-old boy's mother, stepfather and another man who was renting a room in the basement of the home. Police say officers found prescription and some illegal drugs in the house.