North Korean regime was behind the murder of the estranged half brother of North Korean leader Kim Jong Un, Reuters reported.

"We believe the North Korean regime is behind this incident considering five suspects are North Koreans" Jeong Joon-hee, spokesman at the South Korea's Unification Ministry that handles inter-Korea affairs, told a briefing.

Earlier, Malaysian police announced  about the arrest of a citizen of North Korea in connection with the murder. More four suspects, also from North Korea, have already left Malaysia.