It began Monday when the man boarded a flight from Peru to Fort Lauderdale, Florida with the tiny monkey tucked under his hat. He then spent several hours at the Fort Lauderdale airport before catching a connecting flight to New York's La Guardia airport.

During that flight the monkey crawled out from under the man's hat and onto his shoulder, where it was spotted by other passengers. Police were waiting for the man when the plane arrived at La Guardia. It's still unclear what charges he could face.

The tiny marmoset is now under quarantine. Michael Pastore of New York City Animal Care and Control says that monkeys that appear to be healthy can still carry a variety of diseases, and that they'll be watching this one closely.