The British government's emergency committee is going to meet after two attackers butchered a man in a brutal daylight attack in London amid fears that terrorism has returned to the capital.

Prime Minister David Cameron says there are strong indications it was an act of terrorism and his top advisers will be examining the potential security implications Thursday. The police counter-terror unit is leading the investigation.

Authorities did not identify the victim by name, but French President Francois Hollande referred to him as a "soldier" at a news conference in Paris with Cameron, who was visiting. Cameron would not confirm that, but British media say the victim was wearing a shirt in support of troops and Britain's Ministry of Defense said it was investigating whether a U.K. soldier was involved.