Image source: WABC-TV

Greyhound bus riders were accompanied by some uninvited passengers during a trip to New York on Friday.

Hundreds of cockroaches emerged from the vents and began scurrying over the windows, walls and on the passengers themselves.

"Roaches started crawling up on our clothes, crawling out of the ceiling," passenger Gregory Simpson told WABC-TV.

Forty-eight passengers were on the bus from Atlantic City, N.J. to New York City, according to the station. The problem started just 15 minutes into the ride -- just a few at first, then more and more.

"There were too many to count," passenger Dejuana Alexander said . "When I say infested i mean infested...[passengers] were in the aisles literally brushing roaches off."

In a statement to WABC, Greyhound apologized for the "inconvenience" and said it was looking into the cause of the problem.

"We apologize for this inconvenience and our team will be transporting the first bus back to our garage to investigate the situation and determine its cause,"the statement said.

Greyhound gave all passengers a refund on their fare.