Myanmar police fired stun grenades to disperse protesters in the city of Yangon on Tuesday, witnesses said, as foreign ministers of neighboring countries were due to hold talks with the military in an effort to quell deadly violence.

The talks will come two days after the bloodiest day of unrest since the military removed Aung San Suu Kyi's elected government a month ago, unleashing anger and mass street protests across Myanmar.

Protesters, many wearing hard hats and clutching makeshift shields, had gathered behind barricades in different parts of Yangon to chant slogans against military rule.