Four Yarra Ranges boys have been questioned by detectives as part of investigations into the bushfire in Montrose, with no charges laid.
Emergency services were called to reports of a fire at Dr Ken Leversha Reserve about 2pm on Saturday 15 March.
The fire quickly spread and caused damage to nearby properties.
Reports of four teen boys seen leaving the reserve just before sirens were heard was raised at a community meeting on Sunday 16 March.
Municipal emergency response coordinator Senior Sergeant Mark Knight confirmed that police were exploring the line of enquiry.
He also requested that nearby residents with private CCTV cameras provide footage to the Yarra Ranges Crime Investigation Unit to support the investigation.
Four boys were interviewed by Yarra Ranges Crime Investigation Unit detectives this week.
They were released pending further investigation.
Detectives are not looking for anyone else in relation to the incident.
