Innocent people could have been killed when two gunmen sprayed two Adelaide homes with bullets as they targeted a rival gang member

Innocent people could have been killed when two gunmen sprayed two Adelaide homes with bullets as they targeted a rival gang member, police say.

At least 20 shots were fired at the homes by the gunmen who walked down the suburban Craigmore Street on Wednesday night and opened fire.

Crime gangs task force boss Detective Superintendent Des Bray said the gunmen were thought to have targeted a man who was well known to police and was associated with the New Boys street gang and the Comancheros bikie gang.

The man was currently before the court facing serious charges.

But Supt Bray said it appeared the gunmen weren't sure which home the man was in so fired at both homes, including one owned by people who had nothing to do with the gang warfare.

He said it was fortunate no one was hurt in the attack.

"It appears they've targeted one house, fired a large volley of shots into that house and then they've turned their attention to the other home," Supt Bray told reporters on Thursday.

"Basically the behaviour of these people, it's just very, very cowardly.

"We've got two people in the still of night, slink down the street and basically open up firing on a house in the middle of the night and then run away like cowards.

"They have no regard for whether the people are their target or somebody else," he said.

"Innocent people could have lost their lives."

Supt Bray said police were still investigating the motives for the attack with a number of people associated with different gangs having issues with the man thought to have been the target.

"There's probably several motives and several reasons as to why someone would target that person," he said.

"As to which person is targeting him and for which reason, that will take a little bit longer for us to find out."