KATHMANDU (TIP): Nepal police Tuesday fired into a crowd of demonstrators, killing one during protests against a proposed new constitution, as deepening discord spurred lawmakers from a regional party to resign from parliament.

National police spokesman Kamal Singh Bam said the clashes broke out in the southeastern district of Saptari when protesters tried to block a major national highway.

Hundreds threw petrol bombs and stones at security forces, attacking their vehicles and vandalizing a local police station, he said.

“One person was killed and five were injured after police were forced to fire to control the violent mob,” Bam told AFP.

Regional parties representing the Madhesi ethnic minority who live in the area called an indefinite strike on Tuesday to protest plans in the constitution to divide Nepal into six provinces.