LUCKNOW, May 5 -- A 24-year-old man was brutally beaten to death by an unidentified group of assailants, in a Barabanki village in the early hours of Sunday, police said. The victim, who was a said to be a quack doctor, was asked to step out of his premises in Dadhiya Mau village by the men on the pretext of treating a patient. That was when he was assaulted, police said, adding they had taken some suspects into custody for questioning. Even as the investigators did not suspect his trade to be the reason for the attack, his mother alleged that her son's murder could be due to a land dispute. A Barabanki police official said Satyendra Vishwakarma, who was killed, had been practicing his trade for several years and opened a clinic about two kilometers away from his house in Maluli. "Satyendra often stayed back at his clinic. He was sleeping at his clinic on the night of the attack. The attackers posed as the attendants of a patient. They assaulted him with metal bars and canes as soon as he stepped out of the clinic. A local, Vivek Nand Nag tried to rescue him, but the assailants still chased Satyendra for around 100 meters and fled leaving him profusely bleeding," Masauli inspector in-charge SK Singh said and added that Satyendra was declared dead at a local community health centre. Satyendra's mother Gangotri Devi told cops that she was suspicious of four people. They were Sant Lal, Kishore, Rajendra and Lal Bahadur of Dadhiya Mau. She said these people had a land dispute with her son and even threatened him with dire consequences previously....