Bruno Travalja, the architect who fell to his death from a Midtown skyscraper on Thursday afternoon, was wearing a safety harness when he fell, but it wasn't connected to anything, according to city officials.

Travalja was on a deck of the 47th floor of the skyscraper at 135 West 52nd Street when he knelt to take a measurement, before losing his footing and falling over an 18-inch safety barrier. Investigators are looking into whether Travalja suddenly became dizzy after standing up from taking the measurement.

Sources told the Post that Travalja's foot got caught in something when he stood up, and that his other foot was already over the edge of the building when he tried to take a step back.

A full stop work order has been issued on the building, according to city officials, and an investigation by the NYPD and Department of Buildings is still ongoing.