A nationwide transport strike in Kenya over surging fuel prices, blamed on the United States-Israeli war on Iran, has been suspended for a week after four people were killed in mass protests against the increases.

Kenya, one of many African countries heavily reliant on fuel imports from the Gulf, has raised petrol prices by 20 percent and diesel by almost 40 percent since Iran in effect blocked traffic through the Strait of Hormuz, a key chokepoint that normally handles about a fifth of the world’s oil.

The strike was launched on Monday by transport operators, particularly the “matatu” bus operators who provide most of Kenya’s public transport, in response to the latest sharp fuel price hike.

“The strike that is going on is suspended for a period of one week to provide an avenue for consultations and negotiations between the government and stakeholders,” interior minister Kipchumba Murkomen told reporters on Tuesday.

Albert Karakacha, the president of Matatu Owners Association, confirmed the suspension.

Authorities said four people were killed and more than 30 were injured nationwide on Monday. Police said on Tuesday that more than 700 people had been arrested in connection with the protests over fuel price increases.

Rights groups condemned the use of lethal force by security forces, with Amnesty International calling for “maximum restraint”.

The unrest also disrupted Kenya’s main trade corridor, with local media reporting that truck drivers had refused to move cargo amid fears their vehicles could be attacked and set alight by demonstrators.

The national energy regulator said last week the government had spent $38.5m to cushion consumers from rising diesel and kerosene costs.

In a further emergency measure, Kenyan authorities last month temporarily suspended fuel quality standards in a bid to maintain supplies amid growing shortages.

Despite being one of East Africa’s most dynamic economies, Kenya still has deep structural inequalities: about a third of its roughly 50 million people live in poverty and unemployment remains high.