In a previous statement, Pankhania said the posts which he interacted with “have never aligned” with his values and beliefs.
“I am incredibly apologetic that I have not lived up to the standards I set myself.
“I have of course deleted them and I wish to apologise unreservedly,” he added.
The Metropolitan Police said on Thursday that two men who had been arrested in connection with the arson attack on the four Hatzola ambulances had been released on bail.
Hatzola – the Hebrew word for save or rescue – is a large non-profit, Jewish-led organisation that provides a free emergency medical response and transportation to hospitals by volunteer medics.
As well as north London, it also operates in Manchester, Gateshead, Canvey Island in Essex, and Hertfordshire, working in conjunction with local emergency services for the wider community, regardless of faith.