Thompson Square's tour bus was involved in a massive crash on Friday morning (April 17) in Aurora, Colo., that left at least a dozen people injured.

According to a note the duo posted on their website, their band and crew were on board the bus, but they "are all okay and injury free, and damage to our crew bus was minimal."

According to KUSA-TV, at approximately 8:20AM local time, a bus carrying crew members for singer-songwriter Twin Shadow rear-ended a truck that was stopped on Interstate 70, east of Denver. The bus then hit another truck and Thompson Square's tour bus.

"Fog played a factor in this crash, numerous crashes across the state," says Colorado State Patrol Trooper Josh Lewis. "Just because you've cleared one patch of fog doesn't mean another isn't coming around the corner."

Twin Shadows' bus driver, John Crawford, was seriously injured, and 11 of the bus' passengers sustained minor to moderate injuries.

"Our thoughts and prayers are with all of those who were injured and their families," Keifer and Shawna Thompson say in their statement.

This tour bus crash is the second serious accident involving a country music act this week. On Thursday morning (April 16), Lady Antebellum‘s Hillary Scott, her husband, her manager and her bus driver were forced to evacuate their tour bus, which was headed from Nashville to Dallas for the 2015 ACM Awards, when it caught fire. All four escaped unharmed.

Country Music's Scariest Tour Bus Accidents