But the crowd had dispersed by late night, according to police who did not report any additional problems.
Although the students had dispersed by late afternoon, replacement forces were brought in to keep them on campus through the night.
The smoke was picked up and dispersed quickly by the breeze.
Police arrived and tried to disperse the demonstrators by force.
The seed is released in December, and dispersed by wind.
They are very low in toxicity and were believed to have completely dispersed by the spring of 1989.
Soldiers and riot police moved in to disperse the protesters by force.
No security personnel were present at the protest and the protesters had dispersed by the afternoon.
Four soldiers dispersed the crowd by firing weapons into the air, and no injuries were reported.
They disperse easily by several methods, including wind, water, and soil transport.