Xinhua Asia-Pacific News Summary at 1600 GMT, April 15

HONG KONG -- China's Hong Kong Special Administrative Region (HKSAR) marked on Sunday the country's third National Security Education Day with a symposium that discussed the HKSAR's constitutional responsibility for national security.

The symposium, the first of its kind in the HKSAR, was organized by think tank the Hong Kong Policy Research Institute and participated by over 400 people. (Hong Kong-National Security)

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DHAKA -- At least three people were killed when four compartments of a train were derailed on an overpass in Tongi on the outskirts of Bangladesh's capital Dhaka on Sunday.

The crash left roughly 26 people injured, Rakibul Haque, a Tongi railway police official told journalists.

"Three persons were killed on the spot when four bogies of the train derailed." (Bangladesh-Derail)

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ISLAMABAD -- At least two Pakistani security personnel were killed and five others injured in an attack from across the Afghanistan border on Sunday, the military said in a statement.

The Inter-Services Public Relations (ISPR), the media wing of Pakistan army, said that the personnel of Frontier Constabulary, a paramilitary force, came under attack from the Afghanistan side when they were carrying out a routine surveillance at the Pak-Afghan border in Kurram Agency, the country's northwest tribal region. (Pakistan-Afghanistan)

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SYDNEY -- A catastrophic grassfire is continuing to threaten life and property in Sydney's southwest on Sunday, with over 500 firefighters desperately trying to contain the blaze as it encroaches on one of Australia's largest army barracks.

While the threat was downgraded Sunday morning, New South Wales State Rural Fire Service Spokesperson Greg Allen told Xinhua that unseasonably hot autumn weather and strong 60 km per hour westerly winds have reignited the blaze that started Saturday, and made it extremely difficult for fire crews to contain. (Australia-Fire) Enditem