A tube carriage was hit by what is believed to be an air rifle pellet.

At around 5.35pm last night (May 21) passengers on the Central Line service between Buckhurst Hill and Loughton heard a loud bang.

One of the windows of the carriage shattered.

No one in the carriage was injured.

Investigations by British Transport Police and Central Line staff are ongoing.

Police are currently unsure whether the projectile was a stone or a pellet from an air riffle.

Anyone with any information should contact British Transport Police on 0800 40 50 40 or text 61016 citing reference 430 of 21/05/18.