A 15-year-old girl was allegedly sexually assaulted by a 22-year-old youth in Rajamahendravaram city. The incident came to light after the minor girl, an resident of a social welfare hostel in the city, did not return to the hostel in the evening. The accused a native of Dr. B.R. Ambedkar Konaseema district, is absconding. A case has been registered under the Prevention of Children from Sexual Offences (POCSO), Act, said the police.