A large banner has been hung across a building in Valletta asking provoactive questions which it links to the murder of journalist Daphne Caruana Galizia.
The banner, erected across an old building in Old Bakery Street reads: "Why aren't (chief of staff) Keith Schembri and (minister) Konrad Mizzi in prison, police commissioner? Why isn't your wife being investigated by the police, Joseph Muscat? Who paid for Daphne Caruana Galizia to be blown up after she asked these questions?"
The image of the banner was tweeted by one of the victim's sons Paul Caruana Galizia, who wrote: "Let's see how long before @MaltaGov pulls it down."
A decision to remove a number of billboards erected in February, including ones calling for justice in the Caruana Galizia case, had been described as tantamount to a regime using its power to trample on basic freedoms of those who criticise it.
Read: Caruana Galizia billboards removed, sparking protests of 'vile act of suppression'
Ms Caruana Galizia was killed in a car bomb last October. Three men have since been charged with carrying out the assassination but the people who commissioned it are still at large.