Al Jazeera, the Arabic-language television news network, says a telephone caller threatened to blow up the building housing its Beirut bureau because of the network's coverage of Saturday's car bomb explosion in Beirut.

Other news organizations also occupy office space in the same building. Al Jazeera says all news agencies in the building continued normal operations.

Al Jazeera's coverage of the bombing contained an interview with Lebanese opposition leader Walid Jumblatt. Mr. Jumblatt alleged that three bombings in Beirut last week were the work of Syrian-backed Lebanese security agents. According to Al Jazeera's website, Mr. Jumblatt said the agents are trying to defend Lebanon's pro-Syria leadership.

Lebanon's opposition has also accused Syria of involvement in the assassination of former prime minister Rafik al-Hariri.

Some information for this report provided by AP and AFP.