MONTGOMERY — An investigation into whether the state’s environmental chief violated the state ethics law has ended without any charges.

Montgomery County District Attorney Ellen Brooks said she presented evidence to a grand jury concerning Trey Glenn, the director of the Alabama Department of Environmental Management, and the grand jury did not find any provable violations of the ethics law.

The State Ethics Commission sent the case to the district attorney in April 2007. The commission found probable cause to believe Glenn may have used his previous job at the state Office of Water Resources to get his environmental job and to obtain personal trips.