BOSTON — Security at Logan Airport has been beefed up in response to the death of Osama bin Laden even though there is no known threat to the airport.

An airport spokesman says Homeland Security and state police are boosting patrols in the terminals and curbside, while also paying close attention to airport employee identification badges.

Spokesman Phil Orlandella says staff has been told to be extra vigilant and to report anything suspicious.

Logan Airport was the launching point for the two jets that struck the World Trade Center towers in New York on Sept. 11, 2001.

The MBTA’s security chief says the transit agency is also remaining alert and urging passengers to report anything unusual. The T has had no specific threats.

Bin Laden was killed by U.S. troops early Monday.