Harald Kopitz, 56, Austrian man living in Zagreb suspected of killing his three children on Saturday, remained silent in an interview with Zagreb police on Tuesday. Mentally, he is "psychologically relatively stable," his court-appointed attorney, Marko Ivica, told state agency Hina.

He said Kopitz would undergo a medical evaluation “to establish his psycho-physical condition” at the time of the crime. After he is interviewed by the county prosecutor’s office, Kopitz will be investigated for the murders. The prosecution will ask the court to place him in pre-trial detention.

An Austrian national, Kopitz was arrested on Monday evening after being discharged from the Vrapce psychiatric hospital in Zagreb. He was there for a short time, transferred after being discharged from another hospital where he had been taken for attempting suicide.

Kopitz, who worked as a financial consultant for a number of international companies in the region, is suspected of strangling his 7-year-old twins and a 4-year old son. According to local media, the children were dropped off to spend a weekend with him in his apartment in the upscale neighborhood of Mlinovi by their mother, Kopitz’s ex wife, as she was due to spend a weekend in Dubrovnik on a business trip.

Kopitz is suspected of killing all three children early on Saturday and then attempting suicide. He had also posted what looked like a suicide note on Facebook, which alerted his contacts who called the police.