Tension is high in Kisauni area ahead of Friday prayers after police raided Masjid Swafaa mosque Thursday night and arrested several youth.
The youth had forced their way into the mosque which is one of three that had been closed to facilitate investigations over allegations of radicalisation.
Mombasa county commander Robert Kitur confirmed the incident and said police had to fire in the air and lob tear gas canisters at the youth who engaged them.
Kitur said the four mosques, Swafaa, Minah, Sakina and Shuhaada in which police have conducted operations will remain closed.
Kitur added that worshipers are advised to seek alternative places to hold their prayers until police clear the four mosques.