Four Trinidadians have said US authorities questioned them about their contact with a suspected al-Qaeda operative after he visited T&T in 2001. Adnan G El Shukrijumah was named when US attorney general John Ashcroft warned of intelligence showing al-Qaeda plans for an attack against the United States. Large photos of El Shukrijumah and six others were displayed at a news conference in Washington on Wednesday. The Saudi native visited Trinidad for six days in May 2001 and stayed with Zainool Ali, who lives in Chaguanas. Ali and three others were questioned by US authorities in late 2003, they told AP....