West Midlands Police say the motive for the attack is unclear. The man has been identified and his family are being informed.
Cockshut Hill and the surrounding area is likely to remain closed until tomorrow.
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Dry today with pleasantly warm sunny spells developing.
Gradually becoming brighter today, staying mainly dry.
Black Sabbath's final concert has been made into a film that is being shown for one night only in cinemas around the country on Thursday.