Nassau County police are investigating another bias incident, this one at a Merrick convenience store, police said Saturday.

First Precinct patrol officers responded to 7-Eleven, at 1800 Merrick Ave., shortly after 3 p.m. Friday “after a customer discovered anti-Semitic graffiti written on an outside wall in black block letters,” police said in a news release.

Detectives urge anyone with information to call Nassau County Crime Stoppers at 1-800-244-8477.

Also Friday, multiple swastikas scrawled in a men’s bathroom ramped up to six the number of graffiti hate incidents at Nassau Community College in Garden City, police said.

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A professor noticed the swastikas about 1 p.m. in the lower level men’s bathroom of the G Building, which houses several departments, including criminal justice, political science and anthropology.

Third Precinct detectives have been investigating bias incidents with graffiti at the college since Oct. 15, when three green swastikas were scrawled in a second-floor men’s bathroom in the E Cluster building.

Police said statistics don’t show an uptick in bias cases over last year and believe that several swastikas at the college found may be the work of a single person.