"Yesterday we launched an operation and we arrested eight individuals involved in the murder," said Deputy Inspector General of Police Tan Sri Noor Rashid Ibrahim.
He added that along with the arrests, a gun was seized from those apprehended in Perak which might possibly be the murder weapon.
"We have seized a firearm that we believe was involved with the murder, and we will send it to the forensics department for confirmation which might take some time," he said in a press conference at the Bukit Aman Police headquarters today.
He revealed that all eight arrested were Malaysians
He also added that those arrested were not relatives of the deceased.
"They are in their 20's and 30's with some in their 50's as well.
"They will be remanded for seven days and we hope we can gather adequate evidence," he added.
In an earlier tweet, Inspector General of Police Tan Sri Khalid Abu Bakar said the case was solved with the arrests of the eight individuals.
Datin Wong Siew Ling, was gunned down in broad day light as she was driving in the Taman Oug area at about 2.30pm on the first day of Hari Raya.
Two assailants on a motorcycle fired five shots at Wong's Toyota Vellfire, killing her on the spot.
She was with her five children and her maid at the time of the shooting.