Lebanon's top prosecutor on Monday began investigating allegations that the militant Hizbullah group set up surveillance cameras near the Beirut airport to monitor the comings and goings of anti-Syrian Lebanese politicians and foreign dignitaries. The allegations have stoked political tensions in the country, giving a new twist to the war of words between Lebanese factions backing the Western-backed parliament majority and the Hizbullah-led pro-Syrian opposition. Judicial officials said Prosecutor General Saeed Mirza ordered the investigation after receiving documents from the country's defense and interior ministers about Hizbullah's alleged placement of the cameras just outside the airport in the Lebanese capital. The officials spoke on condition of anonymity because they were not allowed to talk to the media. They also said military prosecutor Sami Sader was questioning witnesses in the case.