Authorities evacuated the center of Skopje, the National Theater, and the Foreign Affairs Ministry after receiving a bomb threat over the phone on Tuesday, which turned out to be a false alarm.

Increased police presence was seen in the capital’s center following the warning call.

The Interior Ministry released a statement declaring that it is looking into the threat claims, and called on citizens to remain calm.

The Interior Ministry released a statement confirming the false threat, adding that an investigation has been launched to find the person responsible.

Earlier on, police officers secured the perimeter, which according to the Interior Minister is a “standard police measure”, until the threat has been cleared off.

Tonight’s show at the National Theater has also been canceled.