The FBI is investigating after a Bayer pharmaceutical executive’s New Jersey home caught fire earlier this month in a suspected arson attack. No one was injured in the March 4 incident, though the home was occupied at the time,

The FBI’s Newark office is assisting with the investigation into the fire at a residence in Madison around 7:30 a.m. on March 4, ABC News reported Thursday, citing law enforcement sources.

At least eight agencies are investigating a fire at a Bayer executive’s home as a possible arson, authorities said, as many companies increase security for executives following the killing of a United Healthcare CEO.