Twelver Shias and Sunnis will observe Aashura, the 10th day of Muharram, in the city on Tuesday.
Members of the Ithna Ashari Shia (Twelver) community will take out a silent procession and conduct self-flagellation to mourn the martyrdom of Husain bin Ali, the grandson of Prophet Muhammad, in the year 680.
The procession will start at Masjid-e-Askari, Hosur Road, at 12.30 pm, said Syed Zamin Raza, president, Anjuman-e-Imamia.
Jumma Masjid Trust Board, a Sunni Muslim organisation, said it would conduct the Quran recitation, Bayan, Fateha Khwani and Salaam at its three mosques — Jumma Masjid, Shivajinagar; Masjid-e-Khadriya, Millers Road; and Masjid-e-Khuddusiya, Nandidurga Road.
Dawoodi Bohras, a subset of Shia Islam, observed the 10th day of Muharram on Sunday.