NEW HANOVER COUNTY -- It looks like New Hanover County's biggest law enforcement agencies are butting heads. But will the rivalry affect the departments' ability to protect and serve the public? New Hanover County Sheriff Sid Causey is in the news again, in a big way. Documents were released today stating he is refusing any kind of future assistance from the Wilmington Police Department. About three years ago the sheriff's office and the police department agreed to provide mutual aid for each other. For example: deputies would assist officers and vice versa. The agreement also stated that Wilmington Police officers could make traffic stops outside the city limits. However, less than a month ago Sheriff Causey sent a letter to Police Chief Ralph Evangelous canceling the mutual aid agreement. The reason? Causey states there were complaints against the police department. Chief Evangelous said, "We regret that the mutual aid agreement is no longer affective, but it was the sheriff's decision and we respect that. I do personally feel sad about it though." The chief feels that the safety of county residents will be negatively affected. Chief Evangelous did send a letter back to the sheriff asking for documentation about the complaints. The letter also states that Sheriff Causey was unable to provide any proof of complaints. Earlier Monday morning Sheriff Causey agreed to do an interview with WWAY regarding the issue. He said he wanted to speak after Chief Evangelous had his press conference. However, we called the sheriff numerous times, even stopped by his office -- he still has not gotten back in touch with us.