A man accused of murdering his ex and their four-year-old son to avoid paying child support has gone on trial in Germany.
The 25-year-old accused, who under local privacy laws had only been named Anil G, is said to have stabbed the woman and their child before hiding their bodies in a river.
Prosecutors in Cologne say the defendant set up a meeting with his ex after she demanded money to help raise their son.
But instead of agreeing to pay, they allege he stabbed them both to death.
Anil G faces two charges of murder when the trial began at the Cologne district court this month.
His victims have been named as his ex, Derya S, 24, and their four-year-old son Kian.
The pair's bodies were discovered in November last year by walkers by the Rhine River.
Derya, who was training to be remedial teacher, was discovered first in the water at Niehl port. Kian's body was not found in the water for another day.
Derya's father Ersin, 56, is a joint plaintiff in the case.
He reportedly declined the judge's offer to leave the room before photographs of the corpses of his daughter and grandson were shown.
"I got a life sentence, I'll live my whole life with this pain," he said, according to German newspaper Bild.
Derya was reportedly strong-willed and cheerful, with her father saying: "She was funny, friendly and entertaining."
Speaking about his grandson, he said: "He adored me and I him."
The trial is ongoing.
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