Verma had been on a sit-in-protest since last evening.
He had alleged that he was "attacked and threatened" by some persons when he stopped tractor-trolleys which were allegedly carrying illegally mined sand, at the city over- bridge last night.
He also accused the Kotwali police of exercising "laxity", "which resulted in two nabbed accused fleeing the spot".
Verma, who also accused the police of being in "connivance" with sand miners, ended his protest after assurances by the senior officials of the police and the district administration.
"A probe into the alleged misbehaviour by Kotwali city in-charge has been instructed, while an FIR against four persons who were accused of attacking the MLA lodged," he said.
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