The police will look into suspicions that a fatal crowd crunch that killed over 150 people was instigated by intentional pushing by others in the blocked Itaewon alleyway.

Nam Koo-jun, the head of the National Office of Investigation, said on Monday that a headquarters of 475 investigators is in the process of confirming eyewitness accounts and analyzing surveillance camera footage and related social media content.

Over 40 witnesses and injured people have been questioned and some 50 surveillance footage recordings obtained.

The police are also looking into reports that the crowd began to gather after rumors circulated of a famous person being in the area.

Noting that there has not been any confirmation supporting claims of drug use in connection to the incident, Nam pledged to take stern measures against those that defame the deceased, insult their family, or leak anyone's personal information.