The third explosion in the Turkish town of Reyhanli, close to the Syrian border, appears to have been a smaller blast caused by a car engine or a building boiler room, local reporters have told Reuters.
It followed two car bombs that exploded in the early afternoon in the city and killed around 40 people.
More top news
Former Girls Aloud singer Kimberley Walsh is pregnant with her second child, she has revealed.
Chancellor George Osborne will seek to reassure financial markets on Monday morning following Britain's decision to leave the EU.
In his first outing since the referendum result, the lead Leave campaigner has outlined his vision for a post-Brexit Britain.