COTABATO, Philippines, Oct. 8 (Xinhua) -- Suspected Muslim insurgents bombed another power transmission on Thursday in the southern Philippine province of Lanao del Norte but failed to disrupt power supply.

    The military said four of improvised bombs fashioned from mortar shell exploded, destroying the tower's four-leg.

    A local commander, Lieutenant Colonel Allan Hambala, said the second attack did not disrupt the power supply.

    Last week, one of the towers of National Grid Corporation of the Philippines in the Kauswagan townships was also attacked.

    The military suspect rouge members of the Moro Islamic Liberation front under Commander Abdullah Macapaar, also known as Bravo, were responsible for the attack.

    Bravo was blamed for a string of deadly attacks in the restive south following the aborted signing of homeland deal in Malaysia in August last year.

    Troops have been pursing Bravo and another rebel commander, Ameril Kato who killed over 60 civilians in a deadly rampage condemned by international aid agencies. The fighting has affected more than 600,000 people.