The search for missing Florida Firefighter Jerry Perdomo was in day 11 Monday.
Maine State Police Investigators are now calling Daniel Porter a person of interest in the case.
Porter and Cheyenne Nowak are the last known people to have seen Perdomo and both have been questioned.
But why he traveled from Florida to Bangor is still unclear.
"My understanding that he was going to help someone, help a friend and that's the type of person that he is, he helps everyone, he knows everyone, he's social every time we go someplace he knows someone there," said his wife Tonya. "And it would not have been unusual for him to go and help someone because that's what he always did."
Tonya Perdomo was in Bangor to help look for her missing husband, and has since gone back to Florida, where she spoke with the media Monday.
Perdomo's brother in law Chris Lerch and fellow Seminole County Fire Fighter Troy Todak came to town Saturday.
They've been posting flyers and spoke with police Monday about the search. "Just wanted to let them know that I'm here and stay in communication and just any updates for the family home," said Lerch. "Why he was here we don't know, as a family we don't know, it's not important to us right now, you know that will be later or whatever right now we just want to find him and bring him home, we don't care why he was here."
Monday his wife, Tonya, recounted their last phone conversation from Thursday the 16th. "He called me to tell me that he was fine, we only spoke for a minute because the reception was really bad and he told me that he loved me and that to hug and kiss the kids and then told me that he would call me later and I never...he told me he loved me and I didn't hear from him."
Three impounded cars are being checked out by the state police crime lab, and the investigation continues into what happened to Jerry Perdomo.
"At this point we remain hopeful but as the days go on we have to be realistic," said Lt. Christopher Coleman of the Maine State Police Major Crimes Unit Northern Division. "We do believe foul play was involved in his disappearance but I'm not going to speculate if he's alive or dead at this point."
Either way, his family and friends know any bit of information could be the piece that leads police to find Perdomo.
His step sister and father came to Bangor to help in the search.
"I just wanna find him," said his father. "If you know something, just tell it. Tell it to police or tell it to us. We will give you a reward or something. We wanna see him ok."
"By all means if the public has information they've seen him recently or at any given time, call that number and report what you've seen or what you might know," said his fellow fire fighter in Seminole County Troy Todak. "They're still treating this as he's missing and we're going to continue to treat it as he's missing until we're told otherwise."
Police: Porter is Person of Interest in Missing Firefighter Investigation