YANGON, Myanmar ? The ruling military junta extended the house arrest of Myanmar pro-democracy leader Aung San Suu Kyi today and beefed up security around her residence, a government official said.

Suu Kyi, who has spent about 10 of the last 17 years in home detention, was most recently taken into custody on May 30, 2003, after her motorcade was attacked by a pro-junta mob as she was making a political tour of northern Myanmar.

That detention order expired early today, and her supporters were hopeful the military government would grant her freedom.