CBS 58 is digging into a family's allegations against a Milwaukee County Sheriff's Deputy who killed a man near Bradford Beach in June.

Terry Williams’ family is questioning Deputy Michael Truax's use of force saying they have proof he broke policy. They showed us a document from the Wisconsin Law Enforcement Association. It states discharging a firearm at a moving vehicle shall only be done when all other reasonable alternatives have been exhausted or deemed unacceptable. CBS 58 spoke to the Executive Director who says the Sheriff's Office is not a part of their group and never has been.

There's no state law that decides on use of force. Every law enforcement agency decides their own.

CBS 58 obtained the Milwaukee County Sheriff's Office use of force policy which doesn't mention what an officer should do specifically when shooting at a moving vehicle. It says:

When appropriate, deputy sheriffs and corrections officers may use force in the performance of their duties. The degree of force used shall be only that which a reasonable officer would deem necessary given the same circumstances and information. The use of force shall be in compliance with training received at the Milwaukee County Sheriff's Office Training Academy.

Deputy Truax has not been charged with any wrong doing. The Waukesha County Sheriff's Department is leading the investigation.