The indefinite curfew was reimposed from 09:00 AM and security beefed up around Raj Bhawan and the Chief Minister's office complex after agitators made an attempt to submit a memorandum to Governor Gurbachan Jagat, violating the curfew restrictions, official sources said.
The eight-day-old curfew was relaxed for four hours over the weekend.
The sources said security forces were deployed at all entry points to Imphal and anyone entering the capital area was subjected to thorough checking.
Police mobile parties were patrolling at different parts of the city asking the people to remain indoors.
The curfew was imposed after several organisations led by major outfit Apunba Lup began agitation protesting the killing of one Sanjit by police commandos in an alleged fake encounter at Imphal market complex on July 23.
A pregnant woman was also killed and five others were injured by stray bullets in the incident.
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