A man suspected of placing a hoax bomb that evacuated a mall in Queens, New York, on Monday morning is a right-wing conspiracy theorist who was arrested and accused of arson last week and has been under investigation by police for at least a week.

Law enforcement officials said they are looking for the man, Louis Shenker, 22, after New York City firefighters discovered a stolen car with wire, cans and electrical wiring in the form of a hoax bomb device on top of the car's trunk. No explosives were found in the vehicle — a Tesla with Nevada plates parked on a spiral ramp between parking garage levels at the Queens Place mall — but police rescued a husky dog from inside it.

The car had pro-Black Lives Matter movement signage, raising questions of whether the signs were intended to discredit the movement, three senior law enforcement officials said.

Read more: NBC News