The cause of death is unknown, pending an autopsy.

Hard rock act American Head Charge will return to the road later this week, following the April 19 death of guitarist Bryan Ottoson. The band was in the midst of a North American tour with Mudvayne when Ottoson was found dead on its tour bus. The cause of death is unknown, pending an autopsy.

"It is our intention to honor his memory by rejoining Mudvayne, one of Bryan's favorite bands, on their current tour," American Head Charge said in a statement. "Words cannot convey the depth of our sadness, but we want our fans to be able to hear the music Bryan loved so much. He'd be pissed if we didn't continue on."

The band's choice has the support of Ottoson's family, who "firmly stands behind AHC's decision to carry on in Bryan's name," according to his brother Chad.

American Head Charge will rejoin the tour Friday (April 29) in Lubbock, Texas. The outing is scheduled to wrap May 14 in Omaha, Neb.

A memorial gathering for Ottoson is scheduled for tomorrow at the Thomson Dougherty Funeral Home in Minneapolis, to be followed the nxt day by a service at the city's Hennepin Avenue United Methodist Church.