Khalid

Lawyer and fellow activist, Khalid Hussein, told the BBC they were together in Kenya's coast region.

After Air Force One landed in Riyadh’s King Khalid International Airport — escorted by Saudi Arabian F-15s — Trump emerged, pumped his fist in the air then stepped off the plane on to a lavender carpet, where Saudi Crown Prince Mohammed bin Salman greeted him with a jovial, two-handed handshake — a contrast to the seemingly reluctant fist bump Salman once gave to his predecessor, President Biden.

Abu Khalid said he had travelled as a civilian fighter to the Mediterranean coastal village of Sanobar on 7 March, to help battle former regime insurgents.

Abu Khalid, who has now been arrested, insisted Mahmoud was an armed insurgent - but video he filmed of the incident does not support his account.

Military police told the BBC there had been no coordination between security forces and Abu Khalid.