Samir Nasri under investigation over treatment which sparked Twitter furore

Nasri's official account produced a series of sexually explicit messages, which were later deleted.

Samir Nasri will have to explain the intravenous drip treatment he is said to have received at a Los Angeles clinic amid concerns he may have violated anti-doping rules.

The Spanish Agency for Health Protection in Sport (AEPSAD), which handles doping issues in sport, said on Wednesday it was launching an investigation.