AC/DC bassist Cliff Williams is leaving the group.

The rocker announced his departure in a video, on the same day the band wrapped up its Rock Or Bust tour in Philadelphia.

Cliff said he is “just ready to get off the road” and needs more time for family and to “chill out”.

A message from Cliff ⚡️ pic.twitter.com/WqUqxcDBSj

— AC/DC (@acdc) September 20, 2016

The bass player is the second AC/DC member to depart the band this year, after lead singer Brian Johnson left, and the fourth since 2014.

Brian Johnson stopped touring in March amid concern about hearing loss.

Guitarist Malcolm Young retired due to health reasons in 2014 and drummer Phil Rudd left the band that same year.

Cliff said the departures didn’t play a part in his decision to leave the group.