South Korea's government is looking at measures to prevent a recurrence of the crowd crush that left more than 150 people dead.

The incident on Saturday night in Seoul's Itaewon district, where people were celebrating Halloween, killed 155, including two Japanese nationals.

The entertainment district has been a popular gathering spot for Halloween revelers for years. On Saturday, more than 100,000 people were estimated to be in Itaewon.

South Korea requires the organizers of any events with more than 1,000 attendees to consult authorities beforehand. But this didn't apply to last week's Halloween festivities, which were largely a collection of small parties hosted by bars and restaurants.

The government is considering allowing police or other authorities to step in and implement safety measures at their discretion when necessary.

South Korean President Yoon Suk-yeol said at a meeting on Monday that the government needs to take fundamental steps in order to prevent something similar from taking place.

At a parliamentary committee meeting on Tuesday, the government is expected to be grilled by both ruling and opposition parties over its handling of the tragedy.