A pensioner and her 25-year-old son have been released on bail after they were arrested on suspicion of encouraging or assisting a suicide.
A Sussex Police spokesman said: "It is an offence to encourage or assist suicide under the Coroners and Justice Act 2009 and officers are investigating whether any crime has been committed or is likely to be committed if they do not take action."
More top news
The only Muslim survivor of the 7/7 terror attack in London has urged the country to stand together against Islamophobia.
The 75-year-old man was helping a second man rescue two teenage girls, who had got into difficulties in the water.
Americans celebrated 239 years of independence yesterday. Here are some of the best pictures.