Forensics officers could be seen lifting drain covers within the area and looking under cars parked along the street lined with terraced houses.
One officer climbed a fence near an alley.
A police spokesperson said the victim’s family had been informed and were being supported by specially trained officers.
“First and foremost, my thoughts are with the victim’s family and loved ones at this devastating time,” said Det Insp Neil Higginson.
“This was a shocking and tragic attack which has resulted in a young man losing his life.
“I would like to reassure the community that we are pursuing all available lines of inquiry.
“I would urge anyone who witnessed the incident or has any information that could assist our investigation to contact us.”