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Nearly 3 days after a truck crashed in Mississippi and unleashed a group of lab monkeys into the wild, cops were tipped off on a possible sighting -- but hold your bananas, 'cause no monkeys have been found!

Jasper County Sheriff Randy Johnson tells TMZ ... an individual called in Thursday night reporting a monkey sighting around the apartments on Country Road 828 near Heidelberg in Jasper County. Jasper County Sheriff's Department

But, when the search team arrived, there was no monkey swinging around.

There might be some monkey business going around, 'cause when the person heading the search called the male tipster back, a woman answered the phone and was confused about what they were calling about.

Prank call or not, there are still 3 Rhesus Macaques explori

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