Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Hong Kong Protesters Increasingly Desperate as Campus Standoff Continues William Gallo HONG KONG - Waves of student protesters attempted daring escapes past police lines, while less than 200 others remain barricaded inside a Hong Kong University, which has been surrounded by riot police since Sunday. VOA Cantonese Service reporter Iris Tong, who was with students inside the Hong Kong Polytechnic University, described scenes of desperation, with at least two young teenagers threatening suicide. "I saw one boy (threaten) to use a knife on his neck," Tong says. "I didn't see any blood from his neck, but he just talked about how he wanted to kill himself. But other people said it wasn't necessary for him to do that and told him to put down the knife." "I can feel they are hopeless," she said. "It's quite sad." Since Sunday, police have ordered the protesters to drop their homemade weapons and leave the campus via a single exit, where they likely would face riot-related charges. As of early Tuesday, hundreds had agreed to leave the school following negotiations by local officials and community leaders. Many other students have attempted to escape to freedom -- some by sliding down ropes to waiting motorcycles, which tried to zoom past the security cordon that surrounds the campus. Police have fired tear gas and rubber bullets at those who attempt to flee. Last week, hundreds of students barricades themselves on the campus, collecting makeshift weapons including bricks, arrows, and molotov cocktails. Now, only "100-something" protesters remain, says Tong. "But less than half of them can go to the frontlines," she estimates. Lam comments Hong Kong's executive Carrie Lam on Tuesday made her first substantial remarks on the standoff, saying she is "extremely worried" and hopes the situation can be resolved peacefully. But the Beijing-friendly Lam also defended police actions, saying she was shocked that the students had turned the campus into a "weapons factory." About 600 protesters have left the campus so far, Lam said. .