A Siemens executive, his wife — who also worked for the tech conglomerate — and their three young children were among those killed when a New York City sight-seeing helicopter plunged into the Hudson River on Thursday.

Agustin Escobar, 49, was Global CEO of rail infrastructure at Siemens Mobility and previously CEO of Siemens Spain, and his wife Mercè Camprubi Montal, was a communications manager for the multinational tech company.

“We are deeply saddened by the tragic helicopter crash in which Agustin Escobar and his family lost their live," a Siemens Mobility spokesperson said in a statement. "Our heartfelt condolences go out to all their loved ones.”

New York Helicopters CEO Michael Roth told media outlets on Thursday that the unidentified pilot, who also died, had radioed to say they were returning to refuel shortly before the crash, which happened around 3 p.m. EDT.

The helicopter crashed around 15 minutes after it took off from the Downtown Skyport in Lower Manhattan, authorities said. Law enforcement from New York and New Jersey aided in recovery efforts.

The Federal Aviation Administration (FAA) and the National Transportation Safety Board (NTSB) are investigating the incident.

It marks the latest incident in a string of aviation accidents that have put the spotlight on the FAA and shortages of air traffic controllers. Earlier this year, a passenger plane collided with an Army helicopter outside of the nation's capital, killing more than 60 people — marking the deadliest aviation crash in the U.S. since 2001.