TWO men were arrested on suspicion of murdering council worker Ashley Dale in Liverpool last night.
The pair, 28 and 40, from the Huyton area, were also held on suspicion of possession of a firearm with intent, Merseyside Police said.
A 25-year-old man, from St Helens, has also been arrested and is being questioned on suspicion of assisting an offender.
Ashley, 28, was found with a gunshot wound to her body in the back garden of her home just after midnight on August 21 last year.
Following Ashley's death, her heartbroken family said: "None of this makes sense and our lives will never be the same again.
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"A senseless crime that has torn a family apart."
Considered a "rising star" at Knowsley council, Ashley had been promoted within the environmental health department.
Weeks later, she was dead, in what cops say was a case of mistaken identity.
Her killing came just seven years after her brother Lewis Dunne, just 16, was killed by drug dealers, also a mistaken identity shooting.
Less than 48 hours after Ashley's death, nine-year-old Olivia Pratt-Korbel was shot dead at her home in the city.
Merseyside Police are urging anyone with information surrounding Ashley's death to come forward via the Public Portal at www.mipp.police.uk
You can also contact the force via social media @MerPolCC or call 101 or Crimestoppers anonymously on 0800 555 111 quoting reference 22000615873.