SAPD metro police officers served a search warrant yesterday at about 10 a.m. at what they believed to be a fortified gambling house in Santa Ana, at the 600 block of South Newhope Street, near Fitz Intermediate School.

Authorities had received numerous complaints about alleged criminal activity, and obtained a warrant to search the residence, according to the O.C. Register.

The suspected gambling house was “fortified” with steel doors and wrought-iron windows and doors, as well as surveillance cameras, according to NBC News.

The police found 25 people in the house and detained them. Five of the suspects had outstanding warrants, according to Fox News.

Investigators said the property had about 13 gambling machines inside and each machine has the potential to bring in $10,000 to $20,000 per week, according to CBS News.