LUCKNOW, April 23 -- Mechanical faults have been ruled out as the cause of the recent fire at Lok Bandhu Hospital, with evidence pointing towards human error, according to a member of the district-level investigation team. Supporting the electrical safety department's preliminary findings that the fire was likely started by a burning cigarette butt, the probe team are in the process of finalising the report before submitting it to the DM by April 25....