Traffic is queueing on the westbound carriageway of the M4 near the junction for Slough West after a multi-car pile-up.
Two lanes were closed following the accident near the exit slip road for junction 8/9 for Maidenhead but have now been re-opened.
Updates to follow.
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The crash, which took place at about 7am today (Thursday), involved three vehicles. One man sadly died as a result of the collision and his next of kin have been informed.