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Tunisia arrests Berlin attacker's nephew Berlin market attack: Tunisia arrests suspect Amri's nephew
(35 minutes later)
Tunisia arrests nephew of Berlin market attacker Anis Amri and two others, Tunisian officials say Tunisian security forces have arrested the nephew of the Berlin market attacker Anis Amri and two others suspects, officials say.
This breaking news story is being updated and more details will be published shortly. Please refresh the page for the fullest version. The Tunisian interior ministry said the three, aged between 18 and 27, were members of a "terrorist cell", and that they were detained overnight.
If you want to receive Breaking News alerts via email, or on a smartphone or tablet via the BBC News App then details on how to do so are available on this help page. You can also follow @BBCBreaking on Twitter to get the latest alerts. Tunisian-born Amri, 24, was shot dead by police in the Italian city of Milan in the early hours of Friday.
Monday's lorry attack on the market left 12 people dead and 49 injured.
The interior ministry statement said Amri's nephew had confessed that he communicated with his uncle via the encrypted chat application Telegram to evade security surveillance.
It said the three-member cell had been active in the towns of Fouchana, outside Tunis, and Oueslatia near Amri's hometown of Kairouan, about 150km (95 miles) south of the capital.
The statement added that the nephew had also said he supported the so-called Islamic State group.
On Friday, IS released a video showing Amri pledging allegiance to its leader Abu-Bakr al-Baghdadi.