"Due to an unattended bag being found outside terminal 2, the area has been cordoned off as a precaution, while an investigation takes place," reads a statement from the airport.
— Chris Slater (@chrisslaterMEN) August 18, 2016
"This has resulted in some passengers being evacuated from part of the terminal. Any passengers checking into t2 should do so at the station."
— MikeC (@mikethecraigy) August 18, 2016
It is unclear if flights were affected.
One witness tweeted that travelers were told to "stay away from glass."
Manchester is one of the UK's busiest travel hubs.