French police sources in Paris said two more men were arrested for a knife attack in which three people were killed in a church in Nice, increasing the number of people detained to six as investigators confirmed the last contact details of the perpetrator.
The latest arrest took place on Saturday, the source said.
A perpetrator shouting “Allah Huakbar (God is great)” beheaded a woman and killed two others in a second fatal French knife attack, suspected of Islamist motives, at a church in Nice on Thursday.
The 21-year-old perpetrator suspect from Tunisia was shot by police and is now in critical condition in the hospital.
The latest arrest in the case involved two men from the village of Grasse, near Nice and the southern coast of France, BFM TV reported.
France’s counter-terrorism prosecutor general said the charges for the attack on Nice arrived in Europe on September 20 on the Italian island of Lampe Dussa in Tunisia.
Italian investigators are also stepping up investigations of the suspect’s movement and contact on the island of Sicily. They thought they then spent time from Lampe Dussa to Bari on a ship used to quarantine migrants in early October, judicial sources said.
In Bari, it is estimated that he was ordered to leave Italy within a week. Investigators are investigating the possibility that the suspected attacker may have stayed in the Sicilian village of Alcamo for 10 days, the source added.