The women accused in the murder of Kim Jong Un's half brother were taken back to the scene of the crime

Sumisha Naidu, the Malaysia correspondent for Channel NewsAsia, was on the scene during the tour:

Here, police pack in to an escalator.

Due to the sensitive nature of the trial, there was a large number of police on the scene.

Malaysian deputy public prosecutor Muhammad Iskandar Ahmad, seen in the center, was also seen at the check-in kiosk.

Ariffin visited the check-in kiosk at the airport.

The defendants were not the only people brought to the airport. High court judge Azmi Ariffin, seen below in glasses, toured the scene as well.

Siti Aisyah, also on trial, toured the airport as well with armed police.

During Monday's tour, Doan Thi Huong was escorted by police around the airport. Note the Burger King "King Box" advertisement in the background.

Here's what it looked like the day of the attack: A still image from a CCTV footage shows a man purported to be Kim Jong Nam, circled in red, talking to airport staff after being attacked.

Armed police were everywhere in the airport.