Killeen (FOX 44/KWKT) — UPDATE: The woman who died while in Killeen Police custody has been identified.

The woman has been identified as 54-year-old LaTonya Thomas, of Killeen. Police have notified Thomas’s next of kin. The Texas Rangers were also notified, and are now the lead investigating agency.

Police officers arrested Thomas on Monday and placed her in a city jail cell. When officers and jail staff checked on her later, she was unresponsive.

Officers reportedly performed life-saving measures until paramedics arrived and took Thomas to Advent Health. Medical staff there pronounced her dead.