British police have laid siege to the famous London Bridge after an incident of firing on Friday. Although no clear information about the incident has been found yet, according to some reports, the sound of firing has been heard around London Bridge. "We have just started an investigation into the incident on London Bridge," Scotland Yard said in a statement. "If you are around the scene, then follow the instructions of the officers present there," the statement said. London Bridge is one of the areas where 11 people were killed in an ISIS terror attack in June 2017.