N. Korea bio attack is ‘likely’

North Korea is suspected of producing biological weapons to unleash against enemy troops and civilians — including by fake janitors lugging backpack sprayers containing deadly pathogens, according to a report.

“North Korea is likely to use biological weapons before or at the beginning of a conflict to disrupt society and create panic, incapacitate societies, and/ or cause a significant military diversion,” according to the Belfer Center for Science and International Affairs at the Harvard Kennedy School.

Dictator Kim Jong-un’s rogue regime plans to spread the pathogens through various means such as missiles, drones, aircraft and even portable sprayers, the report said.

“It is theoretically possible that North Korean sleeper agents disguised as cleaning and disinfection personnel could disperse [biological weap- ons] agents with backpack sprayers,” the report said.

The Belfer Center says the hermit kingdom is producing the biological weapons in facilities disguised as agricultural research labs.

Meanwhile, North Korea threatened the US with an “unimaginable” nuclear strike for conducting military exercises with South Korea in the waters off the Korean Peninsula.

“The US is running amok by introducing under our nose the targets we have set as primary ones,” warned the staterun Korean Central News Agency, Newsweek reports. “The US should expect that it would face an unimaginable strike at an unimaginable time.”

Japanese Defense Minister Itsunori Odonera warned that the North’s missile capabilities have grown to an “unprecedented, critical and imminent” level.

“Therefore, we have to take calibrated and different responses to meet that level of threat,” he said.