'Kill All Cops' Graffiti Painted on Long Island Utility Pole

Someone spray painted "Kill All Cops" on a utility pole along a major Long Island roadway, Suffolk Police said.

A call came in at 3:01 p.m. reporting the graffiti on a pole on Middle Country Road near Parsnip Pond Road, just east of the Smith Haven Mall in Lake Grove, police said. Police were on the scene investigating Sunday afternoon.

The discovery comes just hours after three police officers in Baton Rouge, Louisiana, were shot and killed in an apparent ambush by a lone gunman. Three other officers were injured in the shooting, in what Louisiana Gov. John Bel Edwards described as a "heinous attack on law enforcement." The suspect responsible for the shooting, later identified as 29-year-old Gavin Long, of Missouri, was shot dead at the scene, police said.

The Nassau and Suffolk police departments have both released statements on the shooting.

"The Nassau County Police Department is taking all steps necessary to ensure the safety of the public and its police officers," Nassau Police said. "There will be intensified patrols in areas of mass transit, public gatherings and near critical infrastructure. Social media outlets will be intensely monitored and we request the public’s assistance in any way possible to stop threats to public safety."

The number of officers in each Nassau Police patrol vehicle will be doubled while the department coordinates with other authorities to assess national and local threat levels.

In Suffolk, police said "additional counter measures were immediately implemented after this attack to ensure the safety of our police officers and the citizens of Suffolk County. The Suffolk County Police Department is in close contact with our law enforcement partners, including the FBI, receiving intelligence and updates on this attack. Modifications to our posture will be implemented as necessary."

Both departments urged the public to be vigilant and immediately report any suspicious activity to law enforcement.