A 42-year-old woman and a 49-year-old man have been arrested on suspicion of the murder of Mark Lovell in County Down.
Mr Lovell, 58, was shot a number of times at close range in his car in Ardcarn Park, Newry, shortly after 18:00 GMT on 1 December.
The man and women were arrested in Newry on Monday and taken to Musgrave serious crime suite for questioning.
Previously, four men – aged 28, 34, 45, and 40 – were arrested and released.
The police have appealed to anyone with information to come forward.
A reward of up to £20,000 has been offered by Crimestoppers.
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£20k reward for information on Mark Lovell murder
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6 December
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Man shot dead in attack in Newry was Mark Lovell
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3 December
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Man shot multiple times at close range in Newry
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2 December
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