One day after burying a young Toronto man, friends and family members gathered again, this time to say goodbye to his best friend.

About 500 mourners attended the Rosedale Presbyterian Church on Thursday for the funeral of Oliver Martin.

His sisters and brothers made friends smile as they shared fond memories.

"I love you, I will never forget you, laughing at you, laughing with you," one sister said as she wept.

Those who knew Martin said he lived a full life, experiencing more in his short life than many could pack into 100 years.

He and Dylan Ellis, both 25, were fatally shot last week while sitting in Ellis' parked SUV in downtown Toronto.

Friends and relatives say they are shocked and devastated by the senseless killings.

"I'm a parent as well and I can't imagine losing a child," Eve Jones, a family friend, said outside the church.

"It must be the worst thing that could ever happen to you."

Hundreds of mourners filled Rosedale United Church on Wednesday for the funeral of Ellis, who was an aspiring photographer. Martin was an investment banker.

The pair was attacked after leaving a friend's house. Martin's girlfriend was in the back of the vehicle but wasn't injured.

Some residents said they saw a man flee the crime scene on a bicycle.

Police have ruled out carjacking and drugs as motives, but say the men may have been involved in a verbal exchange with their killer that fuelled the incident.

Family members have discussed putting up a reward to encourage witnesses to come forward with information that could lead to the capture of the gunman.

Meanwhile, police have posted a video on YouTube appealing for tips.

Anyone with information is asked to call police at 416-808-7400, or Crime Stoppers anonymously at 1-800-222-TIPS (8477).

Tips can also be left online at, or by texting TIP312 and your message to CRIMES.

With a report from CTV Toronto's Austin Delaney