Dhaka, Oct. 24 -- India's Border Security Force (BSF) has been accused of crossing the zero line at Lalmonirhat's Patgram border and hurling a stun grenade at local workers.

Border Guard Bangladesh (BGB) has sent a formal protest note to the BSF.

The incident took place at Bamandal border in Burimari Union on Saturday afternoon, said Karimul Islam, assistant director (Ops) of the BGB's 61 Battalion in Rangpur (Tista-2).

No one was hurt, but panic spread among border residents, he added.

BGB officials and locals said several Bangladeshi workers were lifting stones and sand from the Saniajan River near sub-pillar No. 4 of main pillar 837 on the Bangladesh-India border.

A patrol of 10-12 men from the BSF's 98 Battalion, based at BS Bari...