MIAMI -

Authorities say a Miami-area woman repeatedly drugged her autistic adult son and locked him in a filthy, dungeon-like room with iron bars inside her mobile home so she could spend time with her boyfriend.

Gladys Jaramillo has been charged with aggravated abuse and neglect on a mentally disabled adult and false imprisonment. It is not clear if she has an attorney. The 56-year-old Jaramillo was being held on $15,000 bond.

An anonymous caller tipped off Sweetwater Police on Thursday, saying the 30-year-old man was often locked up and left alone for long periods.

A person familiar with the investigation told The Associated Press that adult protective investigators visited the home in March after receiving a complaint to the state's abuse hotline, but the case was closed after it the house was found clean and the man well cared for.