District 5 City Councilwoman Teri Castillo speaks during a recent council meeting.

Credit: Screenshot / City of San Antonio District 5 Councilwoman Teri Castillo is taking aim at gas-station slot machines and the legal gray area in which they operate.

On Friday, Castillo filed a formal request co-signed by four other members of San Antonio City Council asking its Governance Committee to consider a ban on the controversial gambling machines as soon as possible.