G4S shares dropped as much as 6% and were the biggest fallers of the 350 biggest British companies. Shares of G4S, the UK security company, fell heavily on Monday after it said Omar Mateen had worked for it since 2007. The company said it had screened Mateen as recently as 2013 with “no findings”, Reuters reported. G4S, the world’s biggest security firm, said Mateen carried a gun as part of his duties and that it was trying to establish whether any weapons used in the attack were related to his employment.

Source: The Guardian June 13, 2016 07:22 UTC