ORLANDO, Fla. -

An 18-year-old was arrested Thursday after Orlando police say he was robbing customers responding to fake Craigslist advertisements about Xbox and gaming equipment.

Sadarius Miller, 18, was charged with robbery with a firearm, armed kidnapping and aggravated assault with a firearm.

Police said Miller would place fake ads on Craigslist selling electronics and told the customers to bring only cash at meet him at various locations. When the victims would arrive, Miller would hold them at gunpoint and steal their cash.

Miller is also suspected of at least one additional robbery in another county's jurisdiction, police said. The investigation is ongoing.

Orlando police urge customers shopping online to not use cash, not meet the seller at unknown locations and to pick a well-lit and public place.