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.

At least eight agencies are investigating the cause of a fire at the New Jersey home of a Bayer pharmaceutical executive this month. The fire was reported around 7:30 a.m. March 4 and "quickly extinguished by the Madison Fire Department," the Morris County Prosecutor's Office said. It added that the home was occupied.

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,