Despite rumors that all nightclubs in Boston had been forced to end their under-21 nights, a City Hall spokeswoman said only certain businesses were affected by this suspension.

City Hall has forced certain nightclubs to suspend under-21 entertainment, according to Dot Joyce, press secretary to Mayor Thomas Menino. These suspensions were a result of problems and violations that occurred, Joyce said.

She said City Hall is talking with the business owners to reach an agreement, and the suspension will last until they address the issue.

Andrea Pearce, office manager of the Roxy nightclub in Boston, confirmed that the Roxy, as well as Pure, Encore and Caprice, are all now over-21 clubs. In the past, these clubs have hosted college nights that allowed 18- or 19-year-olds to enter.

Marcelino Mado, manager at the nightclub Rumor, said his club has been affected by this new policy. Rumor used to host 19-plus nights on Tuesdays that attracted a large college student population. The nightclub Avalon will no longer host 19 plus nights either, he said.

Mado said these under-21 nights ended because the club managers were facing difficulties in staffing the club for those nights and it was difficult to control the minors consuming alcohol.

“They don’t want underage drinking. It’s 18 to get in and then people just get served alcohol anyway,” said Tadas Vaisvila, a sophomore mechanical engineering major.

This new policy is going to dramatically affect the clubs, said Mado.

“We did not get money from alcohol but the club made money by the entrance fee,” Mado said.

Mado said he does not believe the suspension will last. The 19-plus nights will come back because the restriction will hurt many businesses and the attendees of these nights will be upset, he said.

Mark Egan, a Massachusetts Institute of Technology senior business major who works as a DJ and promoter for various clubs, said he is opposed to the change.

“I don’t know whether it’s going to last. I think it’s a bad idea and while it may be good for short-term business, it’s bad in the long run,” Egan said. “It’s going to hurt Boston in the long run and lose the attraction for many college students.”

Andy Bettina, a sophomore English major, said the new rules could have good consequences.

“I think it will be safer – safer for girls. It could be good,” he said. “I think it will do more good than bad.”

Sophomore business major Catherine Kwolek said fake IDs can get anyone in to any club.

“People who are 21 probably have better things to do than go clubbing,” she said. “I don’t know where I’ll go but I’ll try.”

The suspension does not affect clubs in Cambridge like the Middle East and T. T. the Bear’s Place.

– Staff writer Jessica Torrez-Riley and Maggie Cassidy contributed to this report.