Yemeni officials step up security after US warnings

Yemeni investigators are trying to track suspected militants and tightening security following US warnings of a terrorist attack in the country.

The FBI is warning Fawaz Yahya al-Rabeei, 22, might enter the country from Afghanistan to carry out attacks.

Security is being increased to cover potential targets including the embassy, an English language school, and the Sheraton hotel, Yemen's Interior Ministry said.

But the Yemeni official said the government had no information al-Rabeei was in Yemen or had attempted to enter the country.

The warning stemmed from interviews with al-Qaida suspects being detained in Afghanistan and Cuba.

He said "all security precautions" have been taken to prevent "any acts that disturb the country's security and stability or hit the interests of brother nations, including the United States."