A Ukrainian former military officer is on the 10th day of a hunger strike in an Italian prison, where he has accused the authorities of mistreating him to make him confess to blowing up Russia's Nord Stream gas pipelines under the Baltic Sea in 2022.
Serhiy Kuznetsov was detained in Italy in August on an arrest warrant from Germany.
In a letter shown to the BBC by his lawyer, Mr. Kuznetsov says he is being treated as criminal no.1, held in a high-security facility alongside suspected members of the so-called Islamic State (IS or Isis). The BBC has contacted the prison, but it has not yet commented.
No-one has admitted carrying out the attack on the pipelines carrying Russian gas to Germany.
In his first public comment since his arrest, Mr. Kuznetsov writes - by hand - that the Italians have been cynically ignoring my dietary habits for the past two months - a reference to his vegetarian diet.
They think that these restrictions can affect my position, and make me confess my guilt. But such efforts are futile.
A relative of Mr. Kuznetsov's told me they had tried to deliver special food to the prison, but had been refused - and they were worried that he seemed exhausted.
The Nord Stream pipelines were destroyed deep beneath the Baltic Sea at the beginning of Russia's full-scale invasion of Ukraine.
It was a high-profile and controversial attack. Many initially suspected Russian involvement and an attempt by Moscow to blackmail Europe by restricting its energy supplies.
But this summer, German prosecutors activated arrest warrants for two of the men they suspect of carrying out the attack: Serhiy Kuznetsov and a second Ukrainian citizen, Volodymyr Zhuravlyov, who was detained in Poland.
In Italy, by contrast, a court in Bologna last month approved Serhiy Kuznetsov's extradition in a closed hearing. He is currently appealing against that ruling for a second time.
His lawyer said Kuznetsov was refusing all solid food but was doing fine and is clear of mind.
Ukrainian officials have denied any involvement in the explosions, while the human rights ombudsman in Kyiv has expressed interest in Mr. Kuznetsov's case, vowing to check on his prison conditions.
Reflecting on his connection to Ukraine, Kuznetsov stated in his letter: I love Ukraine very much and am happy to have the honour of being an officer in its armed forces. His final appeal hearing in Italy is due in the next couple of weeks.
