BOISE, Idaho -

No charges will be filed against Boise police following a 22-month federal investigation into allegations officers stole items from searched homes.

U.S. Attorney Wendy Olson in Idaho in a letter to Boise Police Chief Mike Masterson says there isn't enough evidence to prove officers violated Fourth Amendment rights of individuals.

The Idaho Statesman in a story on Friday reports it obtained the Dec. 18 letter through a public records request.

The investigation included a grand jury probe that ended without indictments.

Olson declined to provide details of the investigation, including the names of any officers who might have been investigated.