In a heartbreaking murder that has baffled Long Island cops, a hardworking dad was found fatally shot in the chest Tuesday afternoon — with his 3-year-old son sleeping at his side.

Police said suspicions were raised when Carlton Shaw, 38, of East Patchogue, failed to pick up his 5-year-old daughter, Colleen, from her day-care center at around 4 p.m. Tuesday, and employees there called Shaw's neighbor.

The neighbor found the body outside a side door just before 5 p.m. Shaw had been shot once in his chest, cops said.

The victim's 3-year-old son, Carlton Jr., was found asleep next to his dad. Police said Shaw — who worked long hours as a line cook at three Long Island restaurants — had no criminal history or contacts with law enforcement.

Click here to read the full N.Y. Post report.