A 26-year old American from New Jersey came to Yemen in 2008 to study religion and language, his US lawyer said — but ended up detained as an al-Qaida suspect nearly 18 months later and was held shackled to a police hospital bed for weeks before he allegedly tried to shoot his way out.Sharif Mobley was charged last month with killing a Yemeni soldier and wounding another during the escape attempt in March, when he allegedly convinced a guard to unshackle him, grabbed the man's gun and opened fire.Yemeni officials first mentioned Mobley publicly after the escape attempt, saying he had been rounded up with other al-Qaida suspects, and tried to escape while receiving treatment.