"Rihanna" Police Called Over Trespassing German

Cops were called to a Barbados house today, where Rihanna is currently staying, after a man was seen trespassing onto the property.

According to Barbados Police ... they received a phone call from someone in Rihanna's camp after a man believed to be a German national (above) wandered onto the private, beach front residence.

By the time cops arrived on scene, the man had already left -- and we're told at no time was the singer in danger.

Police say they don't believe the trespasser to be a stalker, but they are currently investigating the situation and wish to speak to the man.