Pro-Palestinian activists on a march aiming to break Israel’s Gaza blockade have retreated to the Misrata region of western Libya after being blocked by the authorities in the country’s east, say the organisers, AFP reports.

The “Soumoud” convoy — meaning steadfastness in Arabic — decided to fall back to near Misrata, about 200 kilometres (124 miles) east of Tripoli, after being stopped by the eastern authorities.

Misrata is administered by the UN-recognised Government of National Unity based in Tripoli, while the east is controlled by military commander Khalifa Haftar.

The convoy of more than 1,000 people from Algeria, Morocco, Mauritania and Tunisia had been under a “military blockade” since Friday at the entrance to Sirte, a Haftar-controlled area.

Organisers said they were subjected to a “systematic siege”, with no access to food, water or medicine and communications severely disrupted.

In a statement cited by Tunisia’s La Presse newspaper, the Joint Action Coordination Committee for Palestine — the group behind the convoy — demanded the immediate release of 13 participants still held by eastern Libyan authorities.

In an accompanying video, it reaffirmed its intention to continue the mission to Gaza’s Rafah border crossing with Egypt, with the aim of “breaking the blockade and ending the genocide of the Palestinian people resisting in Gaza”.