Motorhead has canceled the remaining tour dates scheduled for the summer as frontman Lemmy Kilmister continues to recover from health problems.

Last week the veteran rockers canceled two shows in Europe, as a promotion company announced that the 67-year-old Kilmister experienced a hematoma.

Motorhead was scheduled to make eight stops in Europe throughout the summer, hitting major cities including Moscow, Belgium, and Kiev. The band has since canceled all of the scheduled dates.

"Regretfully, Motörhead announces it has had to cancel its remaining six summer festival appearances," a statement on Motorhead's official website reads. "The band hate to let their fans down by missing any shows, but they expect to be back in full force this Fall."

"As you may have heard, earlier this Spring Lemmy had some medical maintenance for the long-term good," the band explained. "He was, at that time, advised to rest, but once feeling better, he of course resumed his life as usual. He has since been advised that he should immediately take some more time to rest."

"I'd like to thank everyone who [wished] me well," Kilmister said in a statement. "It was a tough decision for me as I don't like to disappoint the fans especially in times where [the] economy is bad and people spent their money to see us. But sometimes you can't do anything else than following doctor's orders, but be sure we will be back and kick everybody's ass."

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