A GRIEVING father unlocked his son’s phone over a year after his murder – only to find a chilling video filmed by the alleged killer, mocking the crime.

Michael Boschetto, 32, was stabbed four times in a brutal attack allegedly carried out by his childhood friend Giacomo Friso, 34, in northeast Italy.

Investigators failed to unlock Michael’s mobile phone in the months after his murder on April 27 last year in Villafranca Padovana, Italy.

The device was eventually returned to the victim’s father, Federico, who was desperate to recover photos of his son.

Federico told local media: “My son’s smartphone, which had been seized from Friso, was only returned to me after many months, with the explanation that they couldn’t extract any data from it.

“Later, his girlfriend helped me unlock it – but I saw her go pale. When she turned the phone towards me, I understood why.

“On Michael’s phone, there was a video of Friso filming himself as he walked into his house, dancing and making a victory sign.

“The face of that man, who had just been arrested for my son’s death, was on his phone, wearing a mocking smile.

“Those 30 seconds showed Giacomo Friso almost pleased with having killed my son, making a gesture that seemed to say, ‘I did it, I killed him.’”

Giacomo claimed that he acted in self-defence, but the newly uncovered evidence on the phone appears to contradict his account.

The bereaved father added: “During the video, there were details that didn’t match the story I’d been told.

“According to him, he’d just fought with my son and had been beaten too – but he didn’t even have a scratch on his face.”

Giacomo began banging on Michael’s front door at around 4.30am, according to reports.

Having been woken, Michael went downstairs where the two argued.

Giacomo briefly left, returning at around 6am armed with a knife.

Michael had been waiting outside his home for his girlfriend when Giacomo returned.

She arrived soon after to find him dead, with multiple stab wounds to his face and chest.

Although the investigation was officially closed, this new evidence will reportedly be added to the prosecution’s file.

Detectives believe that Giacomo had no clear motive.

The men are said to have lived on the same street and to have known each other since childhood.

The alleged killer was known locally for his erratic behaviour and had been seen wandering the streets with a knife in the days leading up to the attack.

He had also reportedly just come out of rehab.

The trial is scheduled to take place on September 11.