ISLAMABAD, Sept 30: Separatist guerillas have blown up a natural gas pipeline in the Indian northeastern state of Assam, the latest in a string of attacks after New Delhi called off a six-week ceasefire last week.

Militants suspected to be from the outlawed United Liberation Front of Asom (ULFA) triggered a landmine explosion at a gas pipeline belonging to state-owned oil exploration company Oil India Ltd (OIL), Indo-Asian News Service reported.

The incident took place near Salmari in Dibrugarh district, about 510 km east of Guwahati.

ULFA rebels earlier on Friday carried out a grenade explosion at a busy marketplace in eastern Assam’s Tinsukia town and critically wounded six shoppers.

On Thursday, seven people, including two paramilitary troopers, were injured in another explosion by the rebels in the oil township of Digboi in eastern Assam.

The ULFA is stepping up attacks after New Delhi on Sunday called off a six- week ceasefire and resumed military operations against the outfit.

—APP