A young man arrested this morning in murder of an engineering student in Lucknow on Thursday is son of a former BSP MLA, government sources have said. The murder of Prashant Singh, 23, on Thursday afternoon was caught on security cameras in an apartment complex. The student had reportedly gone to meet his sister at an apartment complex at Lucknow's posh Gomti Nagar Extension area when a group of five-six men, who had been waiting for him, stabbed him in the chest.