<p>A bomb threat caused flight delays and the partial shut-down of Switzerland's main airport in Zurich before security forces gave the all-clear, reports and officials said.</p>.<p>Around a dozen flights were delayed late yesterday by up to 30 minutes, police said, as a result of what they said was an unspecified threat. No flights were cancelled.<br /><br />Local media said the security alert had been caused by an anonymous caller making a bomb threat.<br /><br />"Everything is back in order and flights will resume as normal" on today, said Carmen Surber, spokeswoman for the local police.</p>
<p>A bomb threat caused flight delays and the partial shut-down of Switzerland's main airport in Zurich before security forces gave the all-clear, reports and officials said.</p>.<p>Around a dozen flights were delayed late yesterday by up to 30 minutes, police said, as a result of what they said was an unspecified threat. No flights were cancelled.<br /><br />Local media said the security alert had been caused by an anonymous caller making a bomb threat.<br /><br />"Everything is back in order and flights will resume as normal" on today, said Carmen Surber, spokeswoman for the local police.</p>