The bodies of both have been recovered from the wreckage and have been taken for post-mortem examinations at the Midland Regional Hospital in Tullamore.
The accident took place shortly after 16 skydivers on board jumped off the plane, which took off from Clonbullogue airfield in the country's central county of Offaly at about 2:30 p.m.
The boy is understood to be the son of a member of the local parachute club, while the pilot is understood to be originally from the UK.
Gardai said there was no confirmation on whether either had survived the crash.
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Sixteen parachutists had made their jumps ten minutes earlier before the plane crashed on bogland with the man and boy on board.
A man and a 7 year old boy have been critically injured following a light plane crash near Edenderry this Sunday afternoon, May 13. The pilot is believed to be a United Kingdom national.
Just the pilot and the young boy were on board when the plane crashed. "A rescue/recovery operation is under way".
THE PAIR was in a light aircraft before they crashed in County Offaly.
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"These flights have been happening for the last 20 years and this is the first time I've heard of a plane going down - it is very worrying".
Mr Slattery immediately rang 999 and the parachute club to let them know the location of the crash site.
Gardaí say the plane took off 2.25pm from Clonbullogue Airfield carrying 16 parachutists.
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