Probe Finds Radiation Traces Found on Two British Airways Planes

LONDON—British Airways said on Wednesday that "very low traces" of a radioactive substance had been found on two of its aircraft being examined in a police probe into the death of former Russian spy Alexander Litvinenko.

The airline said in a statement that three B767 short haul aircraft were taken out of service for forensic examination. Initial results showed "very low traces of a radioactive substance on board two of the three aircraft," it said.