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.