Dabiri-Erewa said this in a statement signed by her Special Assistant on Media, Abdur-Rahman Balogun.
The statement noted that the killing of Orebiyi was unacceptable to the citizens and government of Nigeria.
She said the death of Orebiyi and other unjustified murders of Nigerians in the UK was growing worrisome.
Dabiri-Erewa who condoled with the bereaved family also called on the UK government to ensure that thorough investigation and justice is done.
She said Nigeria will no longer tolerate the undue killing and execution of Nigerian citizens abroad.
Orebiyi, who had finished his General Certificate of Secondary Education (GCSE) at Holland Park in London and preparing for his A levels, was stabbed to his untimely death during a clash between opposing gangs at Nottinghill, London.
The 17-year-old was reportedly chased down a busy road and stabbed in the neck in the presence of shocked tourist and passerby.
A neighbour to the deceased, Osman Sahel, told the police that Orebiyi “was a nice boy and very considerate; none of us can understand how this could have happened.”
“As far as I knew, he was never in trouble. I suppose we must now wait for the police to investigate.”
A yet to identified 15-year-old has been arrested by the London police in connection to his death.