A coalition of Democratic lawmakers has called on the US secretary of state to take urgent action for the release of Mohammed Ibrahim, a 16-year-old American-Palestinian held in Israeli military detention for eight months. Ibrahim, who was detained at age 15 during a raid near Ramallah, reportedly suffers from health issues and significant weight loss, according to testimony published by Defense for Children International -- Palestine. The lawmakers expressed 'grave concern' over his treatment and demanded details on what steps the US government is taking to secure his release, setting a deadline for a response. Ibrahim denies accusations of throwing stones at Israeli settlers and has described harsh conditions and mistreatment during his imprisonment. The case has drawn renewed attention to Israel's practice of detaining and prosecuting Palestinian children in military courts.