And federal prosecutors are trying to block an effort by attorneys for Jose Padilla to question Pentagon officials and obtain documents about Padilla’s treatment during his more than three years in prison. The government initially accused Padilla of plotting to set off a dirty bomb inside the United States, but is now holding him on less serious charges. Padilla was held in complete isolation and wasn’t allowed to see an attorney for 21 months. On Thursday, prosecutors asked a judge to prevent Padilla’s lawyers from questioning four military officials, including two who worked at the Navy brig where Padilla was jailed.