"Connor Sparrowhawk suffered an epileptic fit while in a bath at Slade House in Oxford in July 2013."
"Southern Health NHS Foundation Trust eventually admitted responsibility and offered his family compensation."
"The Health and Safety Executive (HSE) told the BBC it will now prosecute the trust."
"Following the announcement, Mr Sparrowhawk's mother Sara Ryan said: `I still feel really sad about it`."
"`I just feel we've been put through the mill. We have been treated appallingly and a young man should be doing whatever he would be doing right now`."
"`He should never have died`..."
"The HSE said it was prosecuting the trust `under Section 3 of the Health and Safety at Work etc Act 1974 following its investigation into the death of a patient under its care`."
"A jury-led inquest in October 2015 found that `failings` by trust staff contributed to Connor's death."
"The trust's boss Katrina Percy resigned in October amid public pressure."