A suspect who was in the custody of investigative authorities in the murder case of Muttahida Qaumi Movement (MQM) leader, Dr Imran Farooq was freed on Wednesday, a private TV channel reported. Quoting the London police, the channel said that investigation with regard to probe of Dr Imran Farooq's murder case has been widened and a suspect is still in custody of the police, however due to some security reasons name of the suspect could not be disclosed.