A sensor scanner provided by the U.S. military has detected 70 signs believed to be of missing persons inside the rubble of the collapsed State Audit Office building in Bangkok, Thailand.

According to the Bangkok Post, citing information from the Ruamkatanyu Rescue Foundation on the afternoon of April 1, these signs were discovered in the middle section of the collapsed building, specifically between the 17th and 21st floors, where most victims were believed to be working when the earthquake struck Myanmar on March 28.

A photo from Thai rescue and fire forces shows the collapsed building in downtown Bangkok due to the earthquake.

However, Bangkok Deputy Governor Tavida Kamolvej stated that it is not yet confirmed whether all 70 detected signs belong to missing persons. So far, 6 out of the 70 detected signs have been confirmed as human bodies.

Tavida also noted that because the 30-story building collapsed in a pancaked manner, it is difficult to accurately determine which floors the trapped individuals were on.