The Mumbai police have issued notices to at least 100 people, including MNS leaders Nitin Sardesai and Bala Nandgaonkar, under section 149 of the CrPC for preventing cognizable offences, an official said on Tuesday.

The move comes after MNS chief Raj Thackeray at a rally in Maharashtra's Aurangabad city on May 1 asked people to play Hanuman Chalisa outside mosques from May 4 if loudspeakers there were not removed.