Abu-Sittah said on X, formerly Twitter, that he had been invited to give an account to French senators of his experience as a doctor in Gaza since the Israeli offensive there, but had been blocked at Paris’s Roissy Charles-de-Gaulle airport.

He had already been stopped from entering Germany last month where he had hoped to attend a “Palestinian Congress” along with former Greek finance minister Yanis Varoufakis, who was also denied access.

“I am at Charles De Gaulle airport. They are preventing me from entering France,” Abu-Sittah said on X. “I am supposed to speak at the French Senate today. They say the Germans put a 1 year ban on my entry to Europe.”

I am at Charles De Gaule airport. They are preventing me from entering France. I am supposed to speak at the French Senate today. They say the Germans put a 1 year ban on my entry to Europe.

— Ghassan Abu Sitta (@GhassanAbuSitt1) May 4, 2024

A French police source confirmed to AFP that France could not allow the doctor entry because it was bound by a German-issued ban on his entry into the visa-free Schengen zone of which both countries are members.

Last month, Abu-Sittah reported that he had been banned from Germany “for the month of April”, and accused the authorities there of stifling freedom of expression.

In another X post on Saturday, Abu Sitta said that “the French authorities are denying me access to an earlier flight and insisting on sending me on the last flight back” to London, calling the measure “an act of utter vindictiveness”.

In an act of utter vindictiveness the french authorities are denying me access to an earlier flight and insisting on sending me on the last flight back late night to London.

— Ghassan Abu Sitta (@GhassanAbuSitt1) May 4, 2024

He said “fortress Europe” was “silencing the witnesses to the genocide while Israel kills them in prison”.

The event which Abu-Sittah had been scheduled to attend was organised by Senator Raymonde Poncet Monge, a Green party member.

The president of the Greens’ Senate group, Guillaume Gontard, called the decision to block Abu-Sittah “scandalous”, and said he was negotiating with the interior and foreign ministries to reverse the move. He added however that the doctor would “probably” be sent back to Britain.

Abu-Sittah spent 43 days in Gaza, notably at the territory’s largest hospital Al-Shifa.

Israeli forces pulled out of the hospital complex in early April, saying they had engaged Palestinian fighters in combat for two weeks there.

The World Health Organization said in April that the hospital had been reduced to ashes by Israel’s siege, leaving an “empty shell” with many bodies.