A child was killed on Wednesday after a lorry smashed into a grandmother pushing a pram.
The tragedy took place on Main Street in the Co Down village of Moira and it is understood that it involved a lorry and an elderly woman out walking with the pram.
Police have confirmed that one person has also been taken to hospital following the collision and remains in critical condition.
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Lagan Valley Alliance MLA Sorcha Eastwood expressed her condolences to the child's family following the incident and said: "I am absolutely devastated for the family that has lost a special little child in an absolutely awful incident in Moira this afternoon.
"My heart is just broken for them and I know we will all hold the family in prayer over the next while, God bless them all. Just devastating."
A PSNI spokesperson released a statement on Wednesday which read: "Motorists are advised that Main Street in Moira is closed due to a serious road traffic collision.
"The off-slip to Moira from the M1 is also closed. The advice would be to seek an alternative route for your journey. An update will follow in due course."
DUP councillor Caleb McCready said that the child was being pushed in a pram when they were both hit by a lorry.
“Unfortunately a child has passed away,” he said before adding that his “thoughts and prayers are with the families involved at this time”.
UUP councillor Jim Dillon added: "I want to express my deepest sympathies to the family concerned and to the lorry driver. It is an absolute tragedy that nobody could have envisaged.”
DUP councillor Allan Ewart said: “Police are continuing to carry out examinations at the scene and this is causing continuing disruption to traffic in the surrounding area, including the M1 off-slip.
"It has already impacted upon some school transport and will likely affect commuter traffic later also.“
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