The crash shut down at least one lane of the highway that serves as the main route between Las Vegas and Phoenix.
Dalrymple said the bus was only carrying members of the franchise's staff but would not say how many. There were no players on board.
The bus occupants emerged uninjured from the crash, Arizona Department of Public Safety spokesman Quentin Mehr said.

The bus was on its way to a Dallas Cowboys fan event in Las Vegas. Charles Cooper, manager of GameWorks entertainment center in Vegas, said the session with 50 to 75 fans was scheduled for 3 p.m. PDT.  People were already waiting when the president of a Las Vegas Cowboys fan club called to relay news of the accident. The event was subsequently canceled. Cooper says the team mascot was supposed to appear.
Mickey Spagnola,Cheap NFL Jerseys China, a columnist for the team's website, has been writing for the past week about traveling on a Cowboys bus with a driver, the team mascot and videographer. On his Twitter page, Spagnola tweeted before 2 p.m. that the bus was 80 miles outside of Vegas.
"All on the bus came through OK with some bumps and bruises," Cowboys spokesman Rich Dalrymple (DAHL'-rimp-ul) said in an email.
PHOENIX (AP) — A bus carrying Dallas Cowboys staffers but no players and a van collided Sunday on an Arizona highway, killing four people in the van,China Jersyes Cheap, authorities said.
After the Las Vegas stop, the bus was scheduled to go on to Oxnard,Cheap Jerseys Free Shipping, California for the team's training camp. Members of the organization typically take a bus two weeks before the camp starts and make stops along the way.
The two vehicles collided in the afternoon on U.S. 93,Cheap Carolina Panthers Jerseys, about 30 miles north of the city of Kingman or 180 miles northeast of Phoenix,Authentic Adidas Hockey Jerseys China, according to DPS.