There is an general threat from terrorism. Attacks could be indiscriminate, including in places visited by foreigners.
On 18 November a single gunman shot and killed 2 Bosnian soldiers and wounded another in a betting shop in the Rajlovac area of Sarajevo, north-west of the main centre. As he left the betting shop, the gunman also opened fire on a public bus injuring 3 passengers. The Bosnian authorities have classified the attack as terrorism.
The Bosnian government is treating an attack on 27 April 2015 at a police station in Zvornik as a terrorist incident.
There is considered to be a heightened threat of terrorist attack globally against UK interests and British nationals, from groups or individuals motivated by the conflict in Iraq and Syria. You should be vigilant at this time.