OAKLAND -- A 47-year-old man had stuffed a baggy of marijuana into a jar of Skippy Peanut Butter and packed it in his carry-on bag in hopes of taking the treats with him on an airplane.

But, instead, he missed his flight Sunday from Oakland International Airport to Los Angeles when authorities found the weed in the creamy style peanut butter. He was detained for questioning and cited. His name was not released by the Transportation Security Administration.

Nico Melendez, a TSA spokesman, said airport security screeners at the Oakland airport saw on the X-ray the jar inside the man's luggage and noticed something suspicious inside. What they found was less than half a sandwich bag full of marijuana. Melendez did not know the specific amount of marijuana that was confiscated.

"Obviously, (the find) is not something to bring down an airplane," he said.

Melendez said it's the second time in the last four months -- that he knows of -- that airport screeners have found pot hidden in peanut butter.

"There was one in Los Angeles," he said. "It was Skippy, too."

The man in Oakland was supposed to board a Delta Air Lines airplane when he was detained. Melendez said witnesses at the airport said the man admitted he was trying to hide the pot because he does not have a medical marijuana card.

"Artfully concealed items, like those hidden in peanut butter, rise suspicion of officers as they work to keep potentially dangerous items off aircraft, and until these items are identified, there is no way for to know what each item is,'' Melendez said.

What Oakland TSA screeners found recently was, however, peanuts, compared to what authorities in Miami found in a post office last March.

Police said they found $7,500 worth of marijuana inside Skippy and Fred Meyer peanut butter that was in a 33-pound package that was shipped from Oregon to Florida. The package was addressed to a Florida man, who claimed he wasn't expecting a package and returned it to the local post office, where police dogs sniffed out the drugs.