An Argentine woman has sparked outrage by agreeing to marry her twin sister’s killer.

Edith Casas, 22, is due to wed Victor Cingolani tomorrow close to the jail where he is serving 13 years for the murder of model Johana Casas.

Johana was shot dead days before her 20th birthday in August 2010 in the southern Argentine city of Pico Truncado, 1,200 miles south of the capital Buenos Aires. …

Cingolani, an ex-boyfriend, was convicted of murder in June. …

The twins’ mother Marcelina last night claimed her surviving daughter was suffering psychological problems and said she feared Cingolani would take her life too.