BERLIN (JTA) – A 93-year-old woman in Hamburg is under investigation for her role as an SS guard during a Nazi death march.

The investigation of Hilde Michnia was announced Monday by the Hamburg prosecutors’ office.

State prosecutors through an informant are looking into whether Michnia participated in guarding the death march from Gross-Rosen to a labor camp in Gubin, during which 1,400 of the 2,000 women died. She could face charges as an accessory to murder.

Michnia (nee Lisiewicz) was a guard at the Bergen-Belsen and Gross-Rosen concentration camps.

British occupying forces in Luneburg tried Michnia in 1945 in connection with cruelty toward prisoners along with 44 other camp guards and SS members, Die Welt reported. Eleven were sentenced to death and executed. Michnia received a one-year prison sentence and was released in November 1946.