Three men have been charged with the murder of Maltese investigative journalist and blogger Daphne Caruana Galizia.
Brothers George and Alfred Degiorgio, aged 55 and 53, and Vincent Muscat, 55, all pleaded not guilty.
They were also accused of possession of bomb-making material and weapons.
Caruana Galizia died in an explosion shortly after she left her home in Bidnija, near Mosta, on 16 October.
The 53-year-old was known for her blog accusing top politicians of corruption.
On Monday, police arrested 10 Maltese nationals in connection with the murder. Police operations took place in the town of Marsa, and the Bugibba and Zebbug areas.
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Prime Minister Joseph Muscat, who is not related to Vincent Muscat, said some of the 10 detainees were already known to the police while others had criminal records.
The Times of Malta reports that the three men who have been charged were among those arrested.
A close friend of Caruana Galizia told Reuters news agency that she did not think the journalist had ever investigated the men.