Lebanon's Health Minister Hamad Hassan called on all hospitals in northern Lebanon and the capital, Beirut, to receive those injured by the explosion, adding that the Government will pay for their treatment.
The explosion comes as Lebanon faces a severe fuel shortage that has been blamed on smuggling, hoarding and the cash-strapped Government's inability to secure deliveries of imported fuel.
Tleil is about four kilometres from the Syrian border, but it was not immediately clear if the fuel in the tanker was being prepared to be smuggled to Syria where prices are much higher compared to those in Lebanon.
Sunday's explosion was the deadliest in the country since the huge blast on August 4, 2020, at Beirut's port which killed at least 214, wounded thousands and destroyed parts of the capital.