The BBC was told it was reported to police that in July, Mr Kohli had stones thrown at him and was spat at by a group of children after he told them to get off his neighbour's garage roof.
Petro Pochynok, 34, however, refused to attend Friday's hearing and remained in his cell.They will next return to court on 17 October to enter pleas to the charges they face.
The charges relate to three incidents. The first was on 8 May when a car previously owned by the prime minister was found on fire on a street he used to live on in Kentish Town, north London.Three days later, a fire was discovered at flats linked to the PM in nearby Islington. Firefighters had to rescue one person with the help of breathing apparatus.On 12 May, a fire was discovered at the entrance to Sir Keir's Kentish Town home, which is currently rented out.
Mr Lavrynovych, a Ukrainian citizen, of Sydenham, south London, was the first to be charged and is accused of three counts of arson with intent to endanger life.Mr Carpiuc, a Ukrainian-born Romanian national, of Romford, east London, was the second man charged and is accused alongside Ukrainian Mr Pochynok, of Holloway Road, north London, of conspiracy to commit arson with intent to endanger life.
During the short hearing at the Old Bailey on Friday, Mr Lavrynovych and Mr Carpiuc spoke only to confirm their identities and dates of birth via an interpreter.
Mrs Justice Cheema Grubb told the court that Mr Pochynok had refused to leave his cell for the preliminary hearing, adding that the three men would next appear before the court in October to formally enter pleas.She launched a commission, which will be led by Tory peer and former justice minister Lord Wolfson, to look at the potential consequences of leaving international treaties including the European Convention on Human Rights (ECHR) and whether this could help the government take back control of the asylum system.
The ECHR, which was established in 1950, sets out the rights and freedoms people are entitled to in the 46 signatory countries and is a central part of UK human rights law.However, Badenoch said it had become a "sword used to attack democratic decisions" and to halt attempts to deport illegal migrants and foreign criminals.
The Tory leader said she now believed the UK "will likely need to leave" the ECHR "because I am yet to see a clear and coherent way to fix this within our current legal structures".But she said she would not commit to this without "a clear plan" and "a full understanding of all the consequences".