BENGALURU, Oct. 26 -- Three people have been arrested from Assam in connection with a blast near an under-construction building in Pulakeshinagar locality of Bengaluru, police said on Sunday, adding that the explosion was a part of a murder plot out of a family dispute, however a mix-up left the intended target and a worker seriously injured. According to a statement issued by the Bengaluru police commissioner's officer, the three accused were caught after a 72-hour operation involving 10 special teams. Investigators allege that the prime accused conspired with two childhood friends to kill his cousin over disputes involving land, money and the cancellation of his sister's marriage. All four of them are residents of Dhinanathpur village in Assam, the police said. "Owing to enmity arising from a land dispute and financial dispute in their native village, as well as an issue concerning the cancellation of the accused's sister's marriage, the prime accused allegedly conspired in advance with the other two accused with the intention of murdering the injured person," the statement said. It also added that they had allegedly formed a WhatsApp group, conspired to commit the crime and shared information with one another. Police said that the blast, occurred on October 20, was an outcome of an experiment to make an improvised explosive device (IED) allegedly concealed inside a torch battery and left in a package at a petty shop near the under-construction building on Jeremiah Road, within the limits of Pulakeshinagar police station, and the accused intended to collect it and later pressured him to open it. "To execute the plan, the accused obtained information through online web applications, purchased raw materials locally, and manufactured an Improvised Explosive Device (IED) themselves," the police statement said. However, the parcel was instead opened by a his coworker, triggering the explosion....