A fire was discovered aboard a British Airways flight shortly after it landed at Logan International Airport (search) on Monday night, and five firefighters were injured battling the blaze, officials said.

The firefighters complained of burning in their throats and eyes, MassPort spokesman Phil Orlandella said.

The captain of the London-to-Boston Flight 239 called the Logan control tower after it landed around 9:30 p.m. and said a cockpit indicator showed a fire in the avionics compartment on the underside of the plane.

There were 219 passengers and 14 crew members aboard. None were injured, Orlandella said.

"They were already de-planing when this fire happened," Orlandella said.

A British Airways spokeswoman said the airline was investigating and could not comment further.

The fire's cause was not immediately known, and it was unclear what substance might have caused the firefighters' injuries.