- 16 updates
Defence Secretary Philip Hammond said he was determined that the rules of engagement were followed in Afghanistan.
He told the BBC's Andrew Marr Show:
A MoD spokesman said:
Five British Marines have been charged with murder after an incident in Afghanistan in 2011 the Ministry of Defence.
A spokesperson for the Ministry of Defence could neither confirm nor deny reports that a video found on a serviceman's laptop prompted the arrest of seven Royal Marines on suspicion of murder.
An MoD spokesperson has told ITV News the incident involving the marines occurred in the Nad-e-Ali district of Helmand Province during their tour between March and October last year.
They cannot reveal at this stage how the information about the death of an Afghan insurgent came to light.
An MOD spokesperson has outlined the procedure that will take place following the arrest of seven Marines on suspicion of murder.
- The Marines are held in custody under usual civilian custodial regulations. Therefore, if after 24 hours no charges are brought, the Royal Military Police, who are investigating and evidence gathering, will have to apply for an extension of custody.
- The RMP report to the director of service prosecutions, which is part of the services prosecutions authority - the equivalent to the CPS. He is a QC, an independent body and accountable to the Attorney General.
- If there is sufficient evidence they will be charged with murder.
A Ministry of Defence spokesperson has told ITV News the Marines arrested on suspicion of murder are from 3 Commando.
The incident occurred during their tour of Nad-e-Ali.
The incident which led to seven Marines being arrested on suspicion of murder occurred in the Nad Ali district of Helmand, reports Sky News.
The Conservative MP Colonel Bob Stewart has told Daybreak that an insurgent "in these circumstances is someone shooting at one of our soldiers."
He added: "Obviously someone in the military justice system believes that soldiers have broken the fundamental rules of the Geneva Convention".
Latest ITV News reports
Five Royal Marines have been charged with murder in relation to an alleged incident in Afghanistan in 2011.
Military police have arrested seven Royal Marines on suspicion of murder over an incident in Afghanistan, the Ministry of Defence has said.