The Verdigris Police Department is mourning the loss of one of its own after an off-duty officer died in a crash on Easter.Get the latest news stories of interest by clicking here.Authorities say Officer Karen Conley-Greene was killed in a three-vehicle crash involving a tractor-trailer around 10:40 a.m. on Sunday along Interstate 44 near Garnett Road in Tulsa. Conley-Greene was pronounced dead at the scene. Verdigris police said Conley-Green was off duty when the crash happened. She was a 15-year veteran of the police department. >> Download the KOCO 5 app"Her stewardship was exemplary and her dedication of service to the citizens of The Town of Verdigris and State of Oklahoma was and will be unmatched," Verdigris Police Department officials said in a Facebook post. "Officer Greene was loved by many and will be truly missed. Go rest high on that mountain Karen, we will hold the line from here. We all love you so much, we honor you. Rest in Peace!"The Oklahoma Highway Patrol says the circumstances surrounding the crash are under investigation. Top Headlines From homelessness to Final Four history, Fisk forward Jeremiah Armstead being honored for courage Community searches for answers after 2 women disappeared from Oklahoma Panhandle Video: Dad comes up with adorable ritual to avoid meltdowns over what 5-year-old daughter wears A decade after retirement, Oklahoma baseball coach gets surprise 900th win Crowd twice as big as McCurtain County will take over southeastern Oklahoma during solar eclipse