Heavily armed Maoists blew up the Khaira Block office, destoryed official files by putting them on fire and torched 12 sand-laden truck late last night in the district, during their two-day East Bihar and Jharkand bandh agitation, police sources said on Friday.

“Over 50 heavily armed naxals triggered dynamite blast to blow up the Khaira block office,” they said, adding the ultras later burnt the official files.

They also set 12 sand-laden trucks on fire at Gidheshwar Ghat under the Khaira police station area in the district, sources said.

No casualty was reported in these incidents, they added.

To protest the arrest of their five leaders from various places in Bihar and Jharkhand, the Maoists have given a two-day East Bihar and Jharkhand bandh call.

Two days ago, naxalites had burnt two mobile telephone towers, blew up a railway cabin and set several vehicles on fire in Bihar’s Jamui and Banka districts.