Bones found during hunt for boy

Daniel Morcombe. Photo / Supplied

Three bones have been found at the Sunshine Coast site where authorities are searching for the remains of Daniel Morcombe.

The bones were located near where a second shoe was found on Saturday in the primary search site off Kings Rd.

That shoe appears to match another found at the site last Wednesday, although police have not confirmed whether the pair match the skate shoes Daniel was wearing when he disappeared eight years ago.

More than 100 state emergency service personnel, 12 police and other community group volunteers have been scouring bushland at the Beerwah site.

The search began last weekend soon after after Brett Peter Cowan, 41, was arrested and charged with Daniel's murder.

Yesterday it was also revealed that undercover police spent months in a Perth caravan park observing Cowan.

The accused had no idea almost every second of his life was being monitored by detectives who were living metres from him at Crystal Brook Caravan Park, the Sunday Mail reported.

The former truck driver, who often walked around with a parrot on his shoulder, reportedly acted as an unofficial handyman for older residents in the park, before going to Queensland in early August.

- AAP