Emergency services are attending the scene.
It is understood the pilot - reported to be from the United Kingdom - and a seven-year-old boy were still onboard.
"I thought he was doing a stunt but I thought he was leaving it very late to turn around".
"However, I knew the plane was in the wrong area". When it got near the tree line, I heard a thump then and that was it, that's all I can say.
"Then I heard a bad roaring and it went straight down".
"That roar will live with me for a while", he added.
Mr Slattery immediately rang 999 and the parachute club to let them know the location of the crash site.
Emergency services worked tirelessly at the scene of the crash all evening, and the bodies of the two victims were recovered just before darkness fell at around 10pm last night.
Postmortems were carried out on the man's remains and those of Kacper Kacprzak at the Midland Regional Hospital, Tullamore today. "It never happened sadly", he told RTÉ news. It is understood the task was made more hard as the plane was buried to a depth of around six feet in the bog.
On Monday morning, two engineers and a pilot from the Air Accident Investigation Unit will continue their inquiry into the events that led to the tragedy.
According to Cllr Fitzpatrick, a Pilatus plane usually used by the parachute club had been sent overseas for an overhaul and the Cessna Caravan was being used in the meantime.
Other locals described the accident as a shocking accident.
He said the club had been quiet over the winter due to the bad weather and it was only now getting back to full operation.
"This time of year, there are planes flying seven days a week", 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", he said.
"The parachute club is always busy, I always see planes flying overhead". Our thoughts and prayers are with those affected. "It's just such a sad day".