AP: 'LOB BOMBS' BIGGEST WORRY FOR U.S. IN IRAQ

U.S. forces may be close to unlocking the mystery of who is behind a deadly innovation in Iraqi insurgents' weapons, a "lob bomb" now being used in Baghdad to target U.S. and Iraqi combat outposts, a senior American general said Friday in an Associated Press interview.

By ROBERT BURNS, AP Military Writer 4 minutes ago
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Maj. Gen. Jeffery Hammond, commander of U.S. forces in Baghdad, called the weapon "the greatest threat right now that we face," and he likened the shadowy group behind it to the American military's elite Delta Force.

The weapon is particularly worrying because it is designed to cause catastrophic damage and cannot be stopped once it has been launched, Hammond, commander of the 4th Infantry Division, said in an interview in his office at this U.S. military headquarters compound just west of the capital.

U.S. forces detained a man on Thursday who Hammond said could provide valuable insights into the group behind the bombmaking. "We think we have defined the network," he said. He would not elaborate, although other American officers said in interviews that the group is Shiite and may have links to Iran.

"We think we might have picked up a guy that could lead us — could be a big lead in this," Hammond said.

It's not clear whether this small group is related to efforts by anti-American Shiite cleric Muqtada al-Sadr to revitalize his Mahdi Army, which had held sway in the Sadr City section of Baghdad until U.S. and Iraqi forces wrested control after seven weeks of fighting that ended in May.

Arguing against a link to such an al-Sadr initiative is the fact that the group that Hammond described has been operating since at least late 2007, although it has become more active in recent months.