Kachin ethnic rebels in northern Myanmar say air attacks by the military are continuing, but that the guerrillas still hold key positions protecting their main base.

Kachin Independence Army spokesman La Nan acknowledged Thursday that one of the guerrillas' hilltop posts had fallen, as reported by the government. But he said other posts remain in rebel hands to safeguard their main base at Laiza.

Myanmar's military on Wednesday acknowledged carrying out air attacks and seizing the hilltop position to keep the Kachin from blocking supply convoys to a government base.

La Nan said two government fighter planes launched rocket attacks Thursday, following several days of strafing and bombing.

The Kachin have long sought greater autonomy from the central government. The two sides have been actively fighting since last June.