Security minister Dan Jarvis, MP for Barnsley North, said it was “devastating news”.
Speaking on X, Mr Jarvis said: “My heartfelt condolences go to the family and friends of those who have tragically lost their lives.”
Supt Alan Travis, from West Yorkshire Police, said: “This is an absolutely tragic incident which has resulted in the loss of six lives.
“Our thoughts go out to the families of those who have died who we are working with to provide support at this time.”
The force has also appealed for any witnesses to come forward.
