What's the most logical way to complete this passage?

When Amer Deghayes graduated from a college in Brighton with a qualification in business studies  this summer, he had his whole future ahead of him. Rather than start a career, he chose to follow in his father's footsteps and travel to Syria in order to had out aid to the needy. But once inside the country he quickly joined forces with the al-Nusra Front, and al-Queda linked group fighting against the regime of Bashar al-Assad. Amer Deghayes (centre, in grey) was the first of his family to leave for Syria, telling his parents he wanted to be an aid worker. Brother Abdullah (front left) and Jaffar (front right) followed soon after

But in April he learned the truth when Amer called to say
Abdullah had been killed by a Syrian sniper