A 65-year-old woman and a 25-year-old arrested on suspicion of encouraging or assisting a suicide are mother and son.
The pensioner and her son were held after police suspected they were planning to take her husband to the Dignitas clinic in Switzerland to commit suicide, according to Press Association sources.
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Days of government bombardment in rebel-held eastern Ghouta have now left more than 500 people dead, observers say.
A cold and sunny day tomorrow
Actress Emma Chambers - star of Notting Hill and The Vicar of Dibley - has died, her agency has confirmed.