A cocaine dealer was arrested Monday near the King Open School, police said.

Jeffrey Appolon, 24, of 63 Thingvalla Ave., Cambridge, was arrested at 7:30 p.m. at the rear of Roosevelt Towers, which is within 1,000 feet of the school, said the communications specialist for the department, Daniel Riviello.

There had been recent complaints of drug activity in the area, bringing detectives from the Special Investigations Unit, so police were ready to act when they got word “an individual would be in the area with a large amount of cocaine,” Riviello said in a press release. When detectives found Appolon, they said, he had about 50 grams of cocaine hidden in the waistband of his pants.

He also had a digital scale disguised as a CD case and a Pringles potato chip container with a concealed compartment, police said.

“We are very proud that a known drug dealer and a large amount of cocaine were removed from Cambridge city streets,” Police Commissioner Robert Haas said.

Police are still seeking information about the arrest — or any drug deals in the city — and can be tipped off anonymously through the police website or by calling a confidential tip line at (617) 349-3359.

This post was written from a press release.