Shirwa Ahmed, a Somali man who lived in the Twin Cities, apparently blew himself up last week in northern Somalia—and there are almost a dozen others who recently disappeared from the Minneapolis area.

5 EYEWITNESS NEWS has learned that federal law enforcement sources believe that a Twin Cities man blew himself up in a suicide bombing in Northern Somalia last month. The FBI and Homeland Security are investigating whether Shirwa Ahmed had developed a terrorist recruiting network in the area.

5 EYEWITNESS NEWS learned that Ahmed came to the Twin Cities in 1996 and graduated from Roosevelt High School in Minneapolis. He was a naturalized U.S. citizen.

More than a dozen young men of Somali descent, mostly in their 20s, from the Minneapolis area have recently disappeared, U.S. law enforcement officials tell 5 EYEWITNESS NEWS. All are thought to be associates of Ahmed. U.S. officials suspect most of the young men have departed for Somalia to fight in ongoing violence there or to train in terrorist camps. Family members of the young men are said to be distraught, trying to figure to out what happened to them, sources say.

So far, the investigation has not uncovered credible evidence of a plot targeting the U.S. but American officials want to track down all these young men before they can say for certain what this is or is not, according to ABC News.