Malaysian authorities have indicated that they intend to question a North Korean embassy official and a state airline employee in connection with the assassination of Kim Jong Nam, half-brother to North Korean leader, Kim Jong Un.

Local law enforcement reported an attempted break in at the hospital morgue housing Kim Jong Nam’s body earlier this week, potentially intended to destroy evidence linking the assassination to North Korea, as many suspect the order to kill Nam came directly from his half-brother, Kim Jong Un.

“We knew there were attempts by someone to break into the hospital mortuary. We had to take precautions. We will not allow anyone to tamper with the mortuary.” A Malaysian official told reporters Tuesday.

Soon after the attempted break in, Malaysian authorities announced that they intended to interview Hyon Kwang Song, who worked at the North Korean embassy in Malaysia, as well as Kim Uk Il, an employee of the North Korean state airline, Air Koryo.

In a press conference, Malaysian Inspector-General of Police Khalid Abu Bakar claimed that both of them were still in Malaysia.  He went on to indicate that Malaysian authorities knew who was responsible for the attempted break in, but declined to say whether or not they had ties to North Korea.

“We know who they are. No need to tell you,” Bakar told reporters.

Bakar went on to say that they are currently seeking four additional North Korean suspects that they strongly believe were involved in the assassination plot.  North Korea has reportedly not complied with Malaysian authorities throughout the investigation, failing to hand over suspects in Pyongyang or even to offer any assistance in solving the crime.

Malaysian authorities have not issued arrest warrants for the North Koreans they seek, but have suggested that if Hyon Kwang Song and Kim Uk Il do not come forward on their own accord, warrants will be issued.