Three teenage girls are talking to police in Gosford, as investigations continue into a multimillion dollar blaze at a Western Sydney school last month.
The 17 year olds aren't expected to be charged over the Parramatta Public School inferno, seeing a damage bill worth $10 million.
Instead it's anticipated the trio will receive a caution for trespassing.
Police are now trying to track down four males seen with the girls at the time.
