Tragedy struck in Onitsha, Anambra state today Monday, May 4, as Police operatives from Okpoko Division in Onitsha arrested a private security guard, Ibuchi Nwoju, who allegedly stabbed a 22-year-old man, Cletus Chisom, to death for failing to use his face mask.According to reports, the suspect had an altercation with the security guard at a market over…