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 home of a Bayer pharmaceutical executive in New Jersey earlier this month.

The FBI and a number of other law enforcement agencies are now investigating whether a March 4 fire at the New Jersey home of a Bayer Pharmaceuticals executive was arson.

U.S. officials were in Moscow for talks, and the Russian leader said he was open to a cease-fire, but President Volodymyr Zelensky of Ukraine expressed skepticism.

U.S. officials arrived in Moscow discuss the proposed 30-day pause in fighting between Ukraine and Russia, but Russia is wary of the deal.

The resumption of U.S. military and intelligence aid for Ukraine follows a contentious White House meeting between the American and Ukrainian leaders, but Moscow is unlikely to agree to the proposed ceasefire.