Police in Yarmouth are investigating a robbery at Cumberland Farms on Route 1 that happened at 1:20 a.m. Tuesday.

Nobody was injured in the holdup.

The suspect is described as a light-skinned black male, slim build, 5’9″ to 5’10”.

Police are trying to determine if the robbery is related to two CVS robberies that have occurred in Portland this month.

One robbery occurred at 7 p.m. Friday night at the CVS in the Forest Avenue Plaza at 449 Forest Ave., police said. The earlier robbery took place at 6:50 p.m. Jan. 12 at the CVS in the Westgate Shopping Center on Congress Street.

The robber of the CVS on Forest Avenue was described as a black man in his 30s or 40s, about 6 feet tall. He was wearing a black and white flannel shirt over a dark hooded sweatshirt, blue jeans and tan boots.

In both the Portland robberies the man presented a threatening note to the clerk and demanded money. He fled on foot after receiving an undisclosed amount of cash.