The Japanese government will fight a ¥156 million ($1.23 million) damages lawsuit filed by relatives of a Sri Lankan woman who died last year while in custody at an immigration center in Nagoya, sources said Sunday.

The family of Ratnayake Liyanage Wishma Sandamali, who alleges she was illegally detained and later died due to a lack of medical care while in custody, filed the lawsuit at the Nagoya District Court in March, two days before the first anniversary of her death.

The first oral proceedings will be held at the court on June 8, with details regarding what arguments the state will present to be revealed at a later time.