The main suspect today led police to the recovery of the pumpgun used in the incident.
The weapon was found in a drain at Jalan Subang Pesiaran Penaga, about 500 metres from the crime scene in Subang Jaya.
Police brought the suspect to the scene at around 9am to start the search.
However, they only discovered the firearm about two hours later as the suspect was unsure of the exact location where he disposed off the weapon before making his escape.
Inspection by forensic investigators revealed four live slugs still inside the pumpgun.
After the weapon was recovered, the suspect was taken back to the police station for further investigation.