March 22 (Reuters) - Following are security developments in Iraq at 1400 GMT on Saturday.

* denotes new or updated item.

* BAGHDAD - U.S. soldiers killed one suspected al Qaeda insurgent and detained 21 others in raids in central and northern Iraq on Friday, the U.S. military said.

ISHAQI - A U.S. air strike on a U.S.-backed neighbourhood patrol checkpoint in Ishaqi, 100 km (60 miles) north of Baghdad, killed six people, police and a local tribal leader said. The U.S. military said it was checking the report.

MAHAWEEL - Police found two bodies with signs of torture and gunshot wounds in Mahaweel, 75 km (45 miles) south of Baghdad, police said.

LATIFIYA - One decapitated body was found in Latifiya, 40 km (25 miles) south of Baghdad, police said.

BAGHDAD - A roadside bomb wounded three rubbish collectors in the Adhamiya district of northern Baghdad, police said.

BAGHDAD - A roadside bomb near a neighbourhood patrol checkpoint wounded six people in the Mansour district of western Baghdad, police said.

BAGHDAD - A roadside bomb killed three U.S. soldiers and two civilians when it hit a U.S. patrol northwest of Baghdad, the U.S. military said.

HILLA - One body was found with gunshot wounds to the head in Hilla, 100 km (60 miles) south of Baghdad, police said.

KIRKUK - A roadside bomb killed one civilian and wounded four others, including two policemen, when it blew up near a police patrol in Kirkuk, 250 km (155 miles) north of Baghdad, police said.

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