OVERLAND PARK, Kan. (AP) — Police in northeast Kansas are looking into a possible sighting of a man who escaped custody in Arkansas, but they haven’t been able to confirm the report.

Someone called Overland Park police Monday to say they saw a vehicle that had a license plate associated with Derrick Estell.

Estell escaped July 28 from a jail in Garland County, Ark., and he was believed to have been headed to southwest Missouri’s Dallas County. He broke out by diving head-first through a window at the jail lobby, running outside and getting into a waiting car believed to have been driven by his girlfriend.

His mother also is charged with aiding his escape.

Police say Estell should be considered armed and dangerous.