The band briefly paused its set as Venturella was treated backstage and then taken to a nearby hospital, but frontman Corey Taylor and his bandmates opted to complete the concert.

Now it has emerged the bassist was treated for dehydration and released on Monday (03Aug15).

A statement from the band reads: "After a medical emergency during last night's show, we are relieved to let everyone know that our bass player, Alex 'Vman' Venturella, is well on the road to recovery.

"Alex collapsed mid-set after feeling unwell and as a precautionary measure was taken to hospital where he was found to be suffering from severe dehydration. After recuperating overnight, he has now been discharged from hospital and is on his way back to his Slipknot family. All being well, Alex will be back onstage with us tomorrow (04Aug15) in Mansfield, Massachusetts.

"We thank everyone who reached out with messages and well wishes for Alex and we look forward to be being back at full tilt for the rest of the Summer's Last Stand tour."

Venturella joined Slipknot last year (14) as tragic bass player Paul Gray's replacement.