4.  The applicant was born in 1968 and lived in St Petersburg before the events of the case. 5.  In 2004 several criminal cases were opened against the applicant on suspicion of kidnapping, extortion and planning an assassination. 6.  By final judgments of 15 March 2007 and 8 October 2009, the Supreme Court of Russia found the applicant guilty as charged and sentenced him to a total of twenty-three years’ imprisonment. 7.  Starting from 10 March 2004, the date of his arrest, the applicant was detained in various custodial facilities in connection with the criminal proceedings against him. In particular, on 15 January 2010 the applicant was transported from a prison hospital to remand prison IZ-47/1 of St Petersburg, where he stayed until 18 February 2010. According to the applicant, the facility was overcrowded. Thus, cell 456 measuring 8 sq. m accommodated up to three inmates. The applicant further claimed that he had been denied the necessary medical treatment there. In support of his allegations, the applicant submitted several photographs of his cell. 8.  On 1 February 2010 Ms Klykova, the applicant’s representative at that time, lodged an application form complaining about the criminal proceedings against the applicant. Attached was a power of attorney, dated 12 January 2010 and signed by the applicant, which read as follows:
“Power of Attorney
[In accordance with] Rule 36 of the Rules of Court
I, Mr Makovoz ... authorise Ms Klykova ... to represent me before the European Court of Human Rights ... in connection with my complaint against the Russian Federation, lodged under Article 34 of the Convention.” 9.  In letter of 19 April 2010, Ms Klykova informed the Court that between 15 January and the end of February 2010 the applicant had been held in the St Petersburg remand prison and described the conditions of his detention there. She also submitted that she had lost contact with the applicant after he had left the prison on an unspecified date in late February 2010. 10.  In letter of 26 October 2012, the applicant further complained about the conditions of his detention in various custodial facilities between 10 March 2004 and 22 December 2011.