Image copyright Facebook Image caption Russian tycoon Nikolai Glushkov was found dead at his home on March 12

UK police have launched a murder investigation after the death of Russian tycoon Nikolai Glushkov in south-west London.

Mr Glushkov was found dead at his home in New Malden on 12 March.

A post-mortem examination revealed Mr Glushkov, who was 68, died from “compression to the neck”.

There is, at the present stage , no evidence connecting the death to the attempted slaying of a former Russian spy and his daughter in Salisbury, police say.

Detectives are retaining an open mind and are appealing for any information that will assist the investigation.

In particular, they are appealing for anyone who may have assured or heard anything suspicious at or near his home in Clarence Avenue, New Malden, between Sunday 11 March and Monday 12 March to contact them.

Police on Friday continued to guard the home lived in by Mr Glushkov. A blue and a purple tent was erected to cover the front drive of the property, which has been cordoned off along with several adjoining properties either side.

Mr Glushkov is the former deputy director of Russian state airline Aeroflot.

He was incarcerated in 1999 for five years after being charged with money laundering and fraud.

Profile: Who was Russian businessman Nikolai Glushkov ? Counter-terror police analyse ‘unexplained' demise Russia spy poisoning: Rudd says inquiry widened to other deaths Sergei Skripal and the 14 demises under scrutiny Vladimir Putin most likely behind Salisbury attack, says Boris Johnson Image caption Detectives are appealing for witnesses who were in the New Malden area on 11 March and 12 March