The Air Accident Investigation Unit examined the scene yesterday.
Air accident investigators will continue their inquiries following the deaths of a pilot and a seven-year-old boy in a plane crash in County Offaly on Sunday.
The aircraft had left Clonbullogue Airfield on Sunday afternoon, carrying 16 parachutists who were making the jump from the plane to land.
It is understood the pilot - reported to be from the United Kingdom - and a seven-year-old boy were still onboard.
The victims had been presumed dead after rescuers confirmed the bodies remained inside the plane until it was dislodged from the ground late on Sunday night.
"However, they then saw the aircraft crash shortly afterwards".
All 16 parachutists onboard successfully made their exit from the plane but eyewitnesses on the ground saw the plane go down.
It is noted that the flight took place on the territory of the parachute club, the causes of the crash are being investigated.More news: Pakistan bars U.S. diplomat from leaving nation after fatal accident
"I've seen them thousands of times", he said.
The plane was located about two kilometres from the airfield in bogland between Edenderry and Daingean.
Postmortems were carried out on the man's remains and those of Kacper Kacprzak at the Midland Regional Hospital, Tullamore today.
The plane was partially submerged in the bog.
It is understood that the crashed plane was a Cessna Caravan.
He said: "People would be over there all the time, especially at weekends in the summer, a lot of people parachuting and a lot of fundraising jumpers".
Another Offaly councillor Noel Cribbin said: "This is a big shock to the area".