Detroit Pistons coach Monty Williams was left unimpressed by the Phoenix Suns issuing a statement following Isaiah Stewart's arrest.

Pistons center Stewart was arrested after he punched Phoenix's Drew Eubanks before Wednesday's meeting between the Suns and Detroit.

Stewart, who was already out of the game due to an ankle injury, was issued with a citation and released, reported ESPN, citing Phoenix police.

Eubanks, meanwhile, helped the Suns win 116-100. The Phoenix center said the altercation with Stewart took place as he was coming into the arena, explaining an argument sparked before security intervened.

In a statement, the Suns said: "The attack on Drew Eubanks was unprovoked, and acts of violence such as this are unacceptable.

"We unequivocally support Drew, and will continue to work with local law enforcement and the NBA."

Williams, who was sacked by the Suns last season, questioned his former team, however.

"The thing is to get all of the information. The NBA will do an investigation," Williams said.

"For me to come here and make a statement would be a bit irresponsible. I know the Suns said it was unprovoked; I think that is irresponsible for sure. You really don't know.

"That did not need to happen. There is a time for the information to be gathered, and then you can make a statement."

A Pistons statement added: "We are in the process of gathering information about what happened and what provoked it, and responding to the NBA and local authorities."

Suns talisman Kevin Durant, who finished with 25 points, said: "Keep the game first. There's a lot of noise. 

"It's unfortunate what happened before the game, it's supposed to be a brotherhood. But I also understand, dudes get into stuff. We try to avoid that in this league, hopefully we can move on from it. We all support Drew."