Officials said that the state police has started round the clock search operations to prevent any unwanted activity.
A team of Manipur police, led by additional SP S Ibomcha Singh conducted search operations at Langjing Achouba in Imphal West district, where the prime minister is scheduled to address a public rally, they said.
The venue of the rally was shifted from Kangla Fort to Langjing Achouba after Irom Sharmila's People Resurgence and Justice Alliance (PRJA) raised objection, citing the venue as a sacred place for the people of the state.