COLOMBO, May 12 — A Sri Lankan court today banned former prime minister Mahinda Rajapaksa, his politician son Namal and 15 allies from leaving the country over violence against anti-government demonstrators.

The magistrate in capital Colombo ordered police to investigate Monday’s mob attacks on peaceful protesters, which led to retaliatory violence that claimed nine lives and caused widespread destruction.

A petition to the court had also asked for an arrest warrant against Rajapaksa and his associates, a court official told AFP.

"But the magistrate turned it down because police anyway have powers to detain any suspect,” the official added.

Victims of Monday’s violence say that Rajapaksa and key aides had bussed around 3,000 of their supporters into the capital and instigated them to attack peaceful protesters.

The loyalist mob poured out of his residence and assaulted anti-government demonstrators with sticks and clubs.

Buddhist monks and Catholic priests were among at least 225 people hospitalised after the attack.

Reprisals soon spread across the country, with dozens of homes of Rajapaksa loyalists set ablaze.

The premier resigned and had to be evacuated from his home by heavily armed troops.

The 76-year-old former leader is currently holed up at a naval facility in the east of the island nation.

His former minister son Namal told AFP on Tuesday that the family had no intention of leaving the country. — AFP