'Bomb Threat' Causes Delays at Zurich Airport

A bomb threat caused flight delays and the partial shut-down of Switzerland's main airport in Zurich on Monday before security forces gave the all-clear, reports and officials said.

Around a dozen flights were delayed by up to 30 minutes, police said, as a result of what they said was an unspecified threat. No flights were cancelled.

Local media said the security alert had been caused by an anonymous caller making a bomb threat.

"Everything is back in order and flights will resume as normal" on Tuesday, said Carmen Surber, spokeswoman for the local police.