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.
More top news
Victims as young as three were discovered on a secret stash of 1,100 images and video files hidden in Dr Lam Hoe Yeoh's home.
Watch as mother Freedom nurses her newborn triplets born at the Ouwehands wildlife park.
A dog that was stolen from Middlesex a year ago has been reunited with her owner after being found in Somerset.