It comes after an MP accused the force of tipping off suspects during a misconduct investigation.
Samuel Robinson is given a five-year written warning after using excessive force during an arrest.
Scott Chilton had sexual relationships with two subordinates and lied about them, a panel finds.
The IOPC is looking at Durham Police's contact with a killer minutes before she stabbed a woman.
The IOPC says Myley French, 20, was wanted for failing to answer bail and was spotted in the street.
The force says it has made a mandatory referral to the Independent Office for Police Conduct.
Scott Chilton faces a misconduct hearing over two alleged previous workplace relationships.
No stinger was used by police before the fatal A66 crash, an initial investigation reveals.
Keith Sayers regularly met up with the child on and off duty, investigators say.
