Fiona Bruce, chair of the All Party Parliamentary Group on North Korea, was speaking after Malaysian police arrested a woman in connection with the death of Kim Jong-nam (above left and below), the half-brother of North Korean leader Kim Jong-un (above, right).
Kim Jong-nam's death was announced on Tuesday at Kuala Lumpur airport, with varying reports saying he was killed using poisonous spray or needles.
Malaysian police say they're looking for five other suspects in connection with his death. Post-mortem results are due in the next week.
The potential heir to the North Korean leadership was overlooked after Kim Jong-il died in 2011, in favour of current leader Kim Jong-un.
He has been critical of the North Korean government, known to operate concentration camps where political opponents and Christians are starved, tortured and killed.
According to the BBC Kim Jong-un's half-brother survived an assassination attempt by a North Korean agent in 2012.
Speaking on Premier's News Hour the Christian Conservative MP Fiona Bruce, who chairs the All Party Parliamentary Group for North Korea, said: "I think what is really concerning about this particular incident is that it's happened on foreign soil. That is truly concerning if indeed it is a government-instigated assassination.
"There have been assassinations of people close to the Korean leadership's family and government on a number of occasions.
"We await to see developments regarding this latest piece of news, but obviously there is a pattern in the past and this may be part of it."
Listen to Premier's Alex Williams speaking to Fiona Bruce MP on the News Hour:
