It's been nearly two years since the unsolved murder of a young London man and his mother is pleading for the public’s help.

Jonathan Zak was fatally shot while walking home from a friend’s house in northeast London on May 31, 2012.

Despite a reward and pleas from his family, his murder remains unsolved.

Jean Zak cherishes the pictures of her son. They are all she has left.

“I'm just sad all the time. It's unbelievable that he would be gone.  Even now, after two years, I still think he might call,” she says.

“I miss talking to him and hugging him. I miss having him here.”

Zak was 29 on the night he was shot. He was walking home from a friend’s house near Huron Street and Highbury Avenue around 1:30 a.m.

His body was found beside a park’s path the next day by a passerby.

Despite a reward of $25,000, the case remains a mystery.

The investigation is still active. Police believe there are people with vital information needed to solve this murder and they hope someone will come forward.

“They should take responsibility for their actions because they have no idea what they have done,” Jean Zak says.

“They've created a hole in people's lives and taken away someone who could have really contributed to society.”

She says her son was always caring of others and is greatly missed by friends and family.

“No matter where we met he would immediately give me a hug. He was very loving.”

A bench is being dedicated in memory of Zak at the northeast park where it's believed he was shot.

A dedication ceremony will take place Saturday on the anniversary of his death. Everyone is invited to attend.