Solapur city remained tense after eight people were killed and over 90 injured in sectarian violence over comments by US Baptist minister Mr Jerry Falwell against the Prophet Mohammed.
"The situation is still very much tense and it is not yet normal," police inspector Mr Ramakant Harbodekar said.
"We have opened fire at least four times ... today and also extended the curfew till 6.00 p.m. (local time). If required, it will be extended further," he added.
Police had used gunfire yesterday on crowds of rioters of Muslim youths who clashed with groups of Hindus as the protest against Mr Falwell's remarks turned violent.
An official said of the five killed on Friday, four died in police firing and one in mob violence.
The deputy chief minister of western Indian Maharashtra state, Mr Chagan Bhujbal, was headed for a tour of the city along with other ministers.
Violence in Solapur had erupted when a crowd of Muslim youths gathered in the city on Friday to protest Falwell's remarks, in which he called Islam's founder "a terrorist".
Various Muslim bodies in the city had called for a strike to protest these remarks. However, the strike turned violent when the mob clashed with some Hindu groups.
A similar strike called by Muslim bodies in India's financial capital, Bombay, however, ended peacefully.
AFP