( CNN ) -- Federal authorities are investigating a New Jersey man suspected of being an al Qaeda member and going on a deadly rampage at a hospital in Yemen . The FBI is investigating Sharif Mobley , a 26-year-old from Buena , New Jersey , said Rich Wolf , a spokesman at the agency 's Baltimore , Maryland , office . He would n't comment further . Mobley had worked at nuclear plants operated by PSEG Nuclear for different contractors from 2002 to 2008 , doing routing labor such as carrying supplies and assisting with maintenance activities , company spokesman Joe Delmar said . Mobley , who also worked at other nuclear plants in the region , satisfied federal security background checks required to work in the U.S. nuclear industry as recently as 2008 , he said . Mobley is accused of shooting and killing a security agent and severely injuring another while trying to flee the Republican Hospital in Sanaa , Yemen , over the weekend , a law enforcement source said . Yemeni counterterrorism forces rushed to the hospital and captured Mobley , who had barricaded himself in a hospital room , said Mohammed Albasha , a spokesman for the Yemeni embassy in Washington . Yemeni authorities had detained Mobley and 10 other al Qaeda suspects earlier this month in a `` successful security sweep '' in the capital of Sanaa , Albasha said . He had been transported to the hospital over the weekend for medical treatment , Albasha said , though he would not elaborate . The law enforcement source said the FBI has interviewed Mobley 's parents . Another source , a U.S. law enforcement official familiar with the case , said authorities have been aware of Mobley for some time . Both law enforcement sources were unaware of any criminal charges against Mobley in the United States . Delmar of PSEG said the company is cooperating with authorities investigating Mobley . CNN 's Susan Candiotti , Carol Cratty and Jeanne Meserve contributed to this report .
Sharif Mobley , 26 , from Buena , New Jersey , accused of deadly hospital shooting . Score: 6 FBI investigating ; they and Yemen officials offer few details .