SEATTLE – The FBI is asking for the public's help to identify two men who have been seen acting suspiciously aboard Washington State ferries recently.

The FBI released a bulletin late Monday, including photographs of the two men. One of the photos shows the men side-by-side and the other is a solo shot of one of them. They were snapped by a ferry employee who thought the pair acted suspiciously.

"They had more than the average interest in the working parts of the ferry, the layout of the ferry, the size of it -- more than you would see in normal passenger," said FBI spokesperson Robbie Burroughs.

The FBI says the men were seen on more then one ferry and more than one run over the past several weeks.  They were also taking photos of parts of the boat, which the agents won't reveal, but that apparently aroused the suspicions of passengers and crew alike.

FBI

The FBI says the men had an unusual interest in the layout and workings of the ferries.

"We got several different reports of this, these same gentlemen," said Burroughs. "We've attempted through law enforcement means to identify and locate them and we've been unsuccessful."

So now, the FBI wants to hear from anyone who knows or has seen these men, and it wants passengers to keep an eye peeled.

"It makes me want to look out for these guys," said passenger Anne Marie Leon.

"If I see them, I'll talk to one of the guys on the ferry," said Donna Eldridge.

"That is something to be concerned about because they could be anybody," said William Wise.

Security has been high since a 2004 risk assessment in which the FBI logged scores of suspicious incidents on state ferries and labeled them a top potential maritime target.  The FBI says these men are wanted for questioning only, not because they are linked to some plot.

"We have no information about any threat to the ferries or imminent threat.  We believe it's safe to ride the ferries," said Burroughs.

The FBI says outside of the pictures, they have no description of the men and they're not guessing as to their nationality.

Anyone who knows the men or their whereabouts are asked to call the FBI at (206) 622-0460.