SRINAGAR, May 19 — Militants made an abortive bid today to blow up the heavily-guarded Jammu and Kashmir Assembly building here with a rocket, official sources said.

They said the rocket, fired from a shoulder-held disposable rocket launcher, missed the target and hit a wall at Maisuma Bund wounding six persons, including three children and a woman. The rocket fired from the Maisuma area, opposite the state Assembly and separated by the Jhelum, was reportedly aimed at the Assembly, the sources said.

The injured were rushed to a hospital, where the leg of Ghulam Mustafa Gadri was amputated, they said.

Security forces immediately sealed the entire area and conducted thorough searches. They said the remains of the disposable rocket launcher were recovered hardly six metres from the site of the explosion which rocked the entire city shortly after noon.

Meanwhile, report from Jammu said Indian troops foiled a major infiltration bid from across the LoC in the Sunderbani area of Rajouri sector early this morning by killing three intruders.

Official sources said Pakistan troops first resorted to heavy firing on the Indian pickets and border villages to provide fire cover to the infiltrators. The Indian forces had received prior information regarding groups of militants having been brought close to the border for, infiltration. The Indian troops retaliated and when they saw a group of militants sneaking into the Indian territory they opened fire killing three of them on the spot. Others managed to escape.

Even after the killing of three militants the Pakistan troops continued to resort to unprovoked firing. Panic gripped the civilians living in the border villages and more than six families fled to safer places.

According to the sources, the Pakistan troops have resorted to intermittent but heavy firing on Indian border villages in several sectors, including Poonch, Rajouri, Kupwara, Keran and Tangdhar during the past one week. Three civilians and two Army men were killed in the shelling and four others were wounded.

Meanwhile, a self-styled battalion commander of banned Hizbul Mujahideen and a policeman were among three persons killed and seven wounded in separate militancy-related incidents in the Kashmir valley since last evening.

Militants shot dead constable Mohammad Shafi of the Special Operations Group of the state police at Yaze-Batpora in Kulgam area of Anantnag district early today.