Pakistani police lobbed tear gas canisters at supporters of the Tehreek-i-Labaik Ya Rasool Allah party on Saturday as part of an operation to clear an intersection where they have camped out for the last 20 days, the Associated Press reported.

According to the report, hundreds of police in riot gear moved against the Islamist party's supporters after a deadline expired at midnight and some 300 protesters ignored the final warning to disperse.

Associated Press quoted Pakistan’s hospital officials as saying that more than 100 people were injured during the operation, most of them from police.

The Pakistani government had made several attempts to resolve the stalemate through negotiations with the protesters, which was demanding the resignation of a law minister over an omitted reference to the Prophet Mohammad in a parliamentary bill.

"We Muslims are united for the sanctity of the Prophethood. All my Muslim brothers are united on this issue and we are supporting these people who are protesting," Gulam Kiyani, Islamabad resident, said.