June 20 (Reuters) - Following are security developments in Afghanistan reported at 1100 GMT on Saturday:

* Denotes new or updated items:

* HELMAND - A NATO-led air strike killed around 26 Taliban insurgents who were trying to plant roadside bombs in southern Lashkar Gah district on Friday evening, Dawood Ahmadi, a spokesman for the provincial governor said.

* HELMAND - Afghan and Western forces killed eight militants during an operation in Gereshk district on Friday, regional Afghan army commander, Sher Mohammad Zazai, said.

* ZABUL - Seven Taliban fighters were killed when they attacked a joint Afghan and foreign army patrol in the Arghandab district on Friday, Zazai also said.

EAST AFGHANISTAN - A U.S.-led coalition soldier was killed in an attack on a U.S. convoy in east Afghanistan, the U.S. military said in a statement, without giving details of the location of the incident.

KHOST - Afghan and U.S. forces detained four militants from the Haqqani insurgent network during a patrol in the Sabari district on Friday, U.S. forces said in a separate statement.

HELMAND - A British soldier serving with the NATO-led International Security Assistance Force (ISAF) was killed in a roadside bomb explosion in the provincial capital Lashkar Gah on Friday, the British Defence Ministry said.

ZABUL - A suicide bomber attacked an Afghan army convoy in the southern Shahjoy district but the soldiers did not receive any casualties or damage to their vehicles, the Defence Ministry said.

KHOST - Two Taliban fighters were killed after they tried to ambush an Afghan army unit in the eastern Ismail Khel district, the Defence Ministry said.

HERAT - Six civilians including three women were killed when a roadside bomb hit their car in western Gozara district on Friday, Mohammad Naqeeb Arween, a spokesman for the provincial governor said.

URUZGAN - Afghan police killed sixteen Taliban insurgents and detained one other during an operation in the southern Khas-Uruzgan district on Thursday, the Interior Ministry said. (Compiled by Hamid Shalizi; Editing by Alex Richardson)

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