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.

A fire at the Madison, New Jersey home of a pharmaceutical company executive is being investigated as an arson attack, according to authorities.