The bird is fully protected under Irish law.
Investigations are underway following the deaths of four buzzards in Westmeath.
The birds were in a state of decomposition. One was viable for processing and submitted for analysis under the RAPTOR protocol. It was found to have been shot.
Buzzards - which are a member of the hawk family - are fully protected in Ireland under the Wildlife Acts 1976 (as amended).
Once plentiful in Ireland, the species almost went entirely extinct here during the 20th century.
Niall Hatch from Bird Watch Ireland says it was commonly thought the bird was a threat to agricultural livestock.
But he says that myth has since been debunked and the species has since made a comeback and breeds in all four provinces.
Anyone who has any information in relation to this incident in Delvin is asked to contact gardaí and/or their local NPWS ranger on 087 6455258. The NPWS says all information will be treated in the strictest of confidence.
Niall Hatch from Bird Watch Ireland says it's a disgraceful destruction of a protected species:
Laois Man Highlights Irish Cancer Society's Transport Service
Westmeath School Team Aiming To Fly Irish Flag In STEM Racing
Down Syndrome Centre Midlands To Mark 10th Anniversary
Former Laois Post Office Gets Green Light To Convert To Café
Water Safety Laois Recruiting Volunteers
Midlands Teen Caught Driving on M7
Planning Sought For Redevelopment Of Offaly Pub
Midlands Sees Surge In House Prices
Westmeath Lake Drives Surge In Murmuration Tourism
Man Jailed For Role In Midlands Cannabis Grow Operation
Midlands Farmers Warn Of Potential Food Rise Costs Due To Strait Closure
Enterprise Minister Announces European Arbitration Centre
High Court Rules Enoch Burke's Transfer To Castlerea Lawful
Disqualified Driver Caught For DUI In Laois
Colaiste Mhuire Mullingar: All Ireland Champions
Westmeath Town Set For Major Job Boost
History Of Westmeath Lake explored in new Documentary Series
Public Garda Appeal Over Missing Offaly Man
Revenue Seize Over €4m Of Contraband
Joint Water Safety Appeal Issued Ahead Of Saint Patrick's Day