The Wyandotte County district attorney said Thursday that his office is re-examining cases involving four Kansas City, Kan., officers who were arrested after a police misconduct investigation.

District Attorney Jerome Gorman told The Associated Press that he couldn’t go into detail about what led to officers’ arrests, but that he was looking at cases in which they were involved.

“One of the things we have concerns about, if charges get filed, is whether these guys who executed search warrants … I have cases set for trial they may be witnesses on. The U.S. attorney’s office also may have cases like that,” he said.

The four officers are members of the department’s SCORE unit — the equivalent to a SWAT team — which executes search warrants and responds to dangerous situations. They have been suspended.

Police Chief Rick Armstrong announced Wednesday that the officers were arrested and released pending formal charges after an investigation conducted with the help of the FBI, U.S. attorney’s office and Wyandotte County prosecutors.

Police and prosecutors say they won’t discuss the allegations against the officers until formal charges are brought.

Police public information officer Brittanie Pruitt said Thursday that any legal action against the officers would be taken by the U.S. attorney’s office, and that it could take up to two weeks before any more details emerge.

Gorman said the officers involved were arrested but not booked, meaning there is no arrest record. He said they were released because if they were kept in custody, there would have been a 48-hour deadline to file charges. He said it was safe to assume they will be charged.

A spokeswoman for the FBI said the agency couldn’t comment on ongoing investigative matters.

Retired FBI Special Agent Jeff Lanza, who handled police corruption cases in the mid- to late 1990s, said “a good portion” of investigations the FBI conducts into police departments are related to drug activity.

He said he doesn’t know the details of the current investigation — or even whether it involves drugs — but said it is a significant case, nonetheless, because it involves law enforcement officers.

“It’s a big deal because it’s a violation of public trust,” he said. “If these cases don’t get investigated and prosecuted, that trust can slowly degrade. It’s important to root out people who have tarnished the badge. If people can’t trust the police department, that’s a huge problem.”

Lanza said it’s common for prosecutors to take a close look at cases involving police officers who are facing criminal allegations to make sure the investigations have not been compromised.