Click to watch raw video of the implosion | Vicente Arenas' 10 p.m. on the home video

Police continued searching Thursday for a possible body buried underneath what was the Crowne Plaza Hotel.

Some workers in the Texas Medical Center, where Sunday’s implosion took place, insist they saw someone enter the building just before the charges were set off.

And 11 News obtained a home video that may be what police are using to investigate those claims.

Some argue the video shows the possibility someone may be inside the building as the explosions began.

It would appear that a door closes just as the initial explosions for the implosion get under way. The video obtained from 11 News was taken from St. Luke's Medical Tower directly across from the hotel. One person called 11 News saying they believe this is the home video that started the investigation.

Police did not confirm that, but they did say the home video prompted the investigation was taken from the same building.

The Harris County medical examiner, HPD Homicide, crime scene investigators and crews with cadaver dogs all worked the scene until around 5:30 p.m. Wednesday. Officials said the search would resume Thursday morning.

Cherry Demolition confirmed what police were looking for late in the day. The company said a home video given over to police led them to believe someone may have entered the building shortly before the series of blasts obliterated it.