LOS ANGELES?Rock group Aerosmith announced it had cut short its US tour due to injuries suffered by its vocalist, Steven Tyler, during a concert in South Dakota.

Tyler fell from the stage during an August 5 show that was part of the Sturgis Motorcycle Rally in western South Dakota, the group said in a statement.

The accident resulted in a broken shoulder and stitches to the singer's head.

After receiving treatment at a local hospital, Tyler returned to Boston to consult with his own doctors.

"In his current condition, Tyler is unable to tour and the band wants to give him time to get healthy," the statement pointed out.

Guitarist Joe Perry thanked the group's fans "for sticking by us through thick and thin" and their understanding.

"We hope we can get the Aerosmith machine up and running again as soon as possible," he added.