Matthew Caruana Galizia has disputed the government's account of contact between Prime Minister Robert Abela and his family, saying the Prime Minister did not speak to his father following Yorgen Fenech's acquittal and accusing the government of trying to bring the matter to a close.

In a post published on Friday, Caruana Galizia said it was "not true" that Abela had spoken to his father, Peter Caruana Galizia, on Thursday.

"We even wrote to him months ago and he never replied," he said.

Caruana Galizia said that, instead, the Prime Minister's assistant had contacted the family on Thursday seeking a meeting.

"We said we need more time," he wrote.

His comments came two days after a nine-member jury acquitted Fenech of complicity in the murder of investigative journalist Daphne Caruana Galizia and of criminal association to commit murder.

Caruana Galizia, who has consistently criticised the handling of his mother's murder, said the government was seeking to bring the issue to an end despite the outstanding questions surrounding the assassination.

"Him and his government are trying to close the matter against all odds. They cannot," he wrote.

He also called for public anger over the verdict and its aftermath.

"Everyone should be furious and should express that fury no holds barred," he said.

The comments add to growing pressure on the government following the acquittal, which has left the question of who commissioned Daphne Caruana Galizia's murder unresolved.