A 17-year-old was arrested in connection to a missing Ronkonkoma girl who was located at his Copiague home on Friday, police say.

Detectives and patrol officers located 12-year-old Madeline Rivera-Cordon, who was reported missing on Oct. 19, at the house on Chestnut Place.

The child was unharmed.

The man was charged with endangering the welfare of a child.

He will be arraigned at a later date.