Police learned that a party in a seventh-floor apartment directly below a spot on the rooftop where bullet casings were found, was going on at the time. The apartment was known for being a site of drug use, residents told police.

"We want to know how it happened and who's responsible," said the victim’s 16-year-old daughter, Jenniffer.  "He was the best father, caring, and he was always there for us and gave us everything we needed. He's the image of the perfect dad.”

Investigators doubted the sniper knew Martinez or specifically targeted him. They theorized that the sniper – who remained unidentified as of this writing – was testing a gun and randomly firing it.

Jenniffer said that she and her 13-year-old brother, George, had eaten dinner with their father a few hours before he left their East Elmhurst, Queens home for his overnight Brooklyn delivery route, as he had done countless times before. “This time he didn't come back,” she said.

The two teens, his former wife, Gisella Fuentes, and friends gathered on Sunday, Sept. 5 to light candles and leave heartfelt messages at the spot on Avenue X at West 13th Street where he was killed.

"My kids are now without a father," said Fuentes. "They need him."