A post-mortem examination gave the cause of death as compression to the neck.
Mr Glushkov had been due to testify in a civil case against the Russian government.
He had been investigating a Slovakian businessman who invested in property in Malta.
The Slovakian prime minister, Robert Fico, was forced to resign in the wake of the scandal as it emerged that Kuciak had been investigating links with the ruling party.
The killers used a black BMW estate which was stolen from Stratford.
Two boys aged 17 have been charged with murder and will go on trial in August 2018.Mr Badru attained a BSc in sport science and an MSc professional practice in sports coaching at the University of Gloucestershire, and had been hoping to get a Ph D.– Beniamin Pieknyi, 21, was stabbed to death in a shopping centre (not Westfield) in Stratford, east London.– Danielle Richardson, 24, was stabbed to death in a second-storey flat in Swan Street, Ancoats, Manchester.A man was seen jumping from a window of the Swan Apartments and then attacking people in their cars during the morning rush hour.– Abraham Badru, 26, was shot dead in Dalston, east London, as he got something out of the boot of his car.He had been awarded the National Police Bravery Award in July 2009 after he intervened to stop a rape.Oluwatimilehin Oniyitan, 20, from Eltham, Ibrahim James, 21, from Plumstead, Dominic Brown, 29, from Woolwich, Andrew Adekoya, 21, and Abaraye Campbell, 21, have been charged with murder.Hugo Verdades, 21, from Greenwich, has been charged with violent disorder, possession of an offensive weapon and conspiracy to commit GBH. – Promise Nkenda, 17, was stabbed to death in Canning Town, east London.Michael Marler, 37, from Oldham, has been charged with murder, attempted robbery, assault and damaging vehicles.– Bulent Kabala, 41, from Enfield, was shot death at 11.44pm at the junction of Mount Pleasant and Edgeworth Road in Barnet.