BANGKOK, Oct. 7 (Xinhua) -- Chaos resulted from clashes between anti-government protesters and police continued Tuesday afternoon in central Bangkok as tear gas were again lobbed, leading to more injuries.

    Some MPs were still blocked by protesters from leaving the Thai Parliament after a cut-short government policy address.

A leader from the People's Alliance for Democracy delivers a speech to protesters outside the parliament in Bangkok on Oct. 7, 2008.(Xinhua Photo) Photo Gallery>>>

    Police shot tear gas again around 4:00 p.m. (09OO GMT) trying to disperse protesters in front of the Parliament compound, which the protesters have besieged since Monday evening.

    Many people suffered injuries from the tear gas, trampling and shoving out of panic, a Xinhua correspondent reported at the scene.

    Anti-riot police have been dispatched to the scene, with gasgroof masks. Ambulances are rushing to the spot, too.

    Thousands of protesters organized by the anti-government movement People's Alliance for Democracy (PAD) besieged the Parliament and Metropolitan Police Bureau compound continued demonstrations on Tuesday morning in an attempt to block the scheduled session.

Armed Thai riot police officers take a position as they confront with anti-government protesters during a demonstration against government outside Parliament in Bangkok, Thailand, Tuesday, Oct. 7, 2008.(Xinhua/AFP Photo) Photo Gallery>>>

    Somchai Wongsawat, the Prime Minister and Defence Minister, began delivering the policy address before the Parliament at a two-chamber joint session after President of Parliament Chai Chidchob announced the session to kick off at around 10:45 a.m. 0345 GMT

    The Prime Minister read quickly through the address quickly which ended at 1:00 p.m. 0600 GMT to cut short the process as electricity inside the Parliament was cut off earlier by the Electricity Generation Authorities of Thailand, whose labor union was in collaboration with PAD in their protest against the government, and the meeting has to rely on make-shift power generators to carry on.

    Somchai outlined the one-year initial-stage policy platform and a three-year long-term plan, with the priority being "reinstall national unity," which is apparently out of the picture amid the chaos on Tuesday.

    A scheduled debate following the reading was canceled.

A man holds an explosive round which he claimed riot police fired upon anti-government demonstrators as they protested outside Parliament in Bangkok Oct. 7, 2008.(Xinhua/Reuters Photo) Photo Gallery>>>

    Only 320 senators and members of parliament, out of a 621 seats in total for the two Houses, attended the session. 310 voted to agree on proceeding with the scheduled session.

    Democrat Party, the sole opposition party in the parliament, had boycotted the session as a gesture to condemn the Somchai government for using force against the protesters.

    Thai Police at 6:20 a.m. (2320 GMT Monday) shot tear gas into the protesters in front of the Parliament to break the blockade and opened an access for the MPs and ministers to get into the compound for the meeting. The incident caused more than 70 injuries.

    By noon, however, PAD protesters regained control of the accesses to the Parliament with more PAD supporters marching to the scene to join the demonstration at a call from PAD leaders.

    Meanwhile after the policy address began, protesters and police in front of the Metropolitan Police Bureau clashed. At one point they were seen firing tear gas at each other.

    The Prime Minister Somchai, as well as some MPs and ministers, has sneaked out of the Parliament compound under the besiege of PAD protesters.

    PAD leaders at the central rally site inside the Government House, about 1 kilometer from the parliament, have demanded Somchai government to dissolve the House of Representatives, or Lower House, by 6:00 p.m. 1100 GMT Tuesday, or the group would take "tough measures," which they had not clearly defined.