Police ordered the evacuation of the entertainment district in central Birmingham (search) late Saturday because of intelligence suggesting a security threat.

Police initially restricted road traffic into the city center, but then ordered an evacuation after receiving further intelligence, a police spokeswoman said on condition of anonymity.

She estimated there were nearly 200 bars and clubs in the Broad Street (search) entertainment district.

Birmingham, 110 miles northwest of London, was the target of one of the worst Irish Republican Army (search) bombings of the 1970s. Twenty-one people died when the IRA bombed two pubs on Nov. 21, 1974.