BANGOR, Maine -- Police in Maine are looking for a missing Florida firefighter who hasn't been seen in almost a week. Today they announced they are also looking for two people who may have seen the man before he disappeared.

Authorities say 31-year-old Jerry Perdomo of Orange City, Fla., drove a rental car from Florida to Bangor, where it was found abandoned on Friday morning in a Walmart parking lot.

He was last seen wearing a black zip-up hooded sweat shirt, army fatigue shorts and black sneakers. He is described as being Puerto Rican, 5-foot-11, about 200 pounds, with black hair and brown eyes.

A colleague tells the Bangor Daily News that Perdomo is a firefighter and emergency medical technician for the Seminole County Fire Department who did not show up for work as scheduled on Sunday. He was going to Maine to visit a friend.

According to a press release from the Bangor Police Department, numerous detectives have been working on the investigation full time. The department also requested assistance from the Maine State Police Major Crimes Unit.

Both agencies have followed up on and pursued investigative leads developed over the past few days.

As a result of the investigation, the police department is now looking for 24-year-old Daniel Porter and 23-year-old Cheyanne Nowak. According to police, it is believed one or both had contact with Perdomo shortly before his disappearance.

According to police, Nowak and Porter are boyfriend and girlfriend. Police believe they are traveling in a white, 2002 Mitsubishi Lancer. The car has a Maine license plate #3710SH.

It is possible Porter and Nowak have now left Maine and traveled outside the state, police said.

If anyone has information as to the whereabouts of Daniel Porter, Cheyanne Nowak or Jerry Perdomo, they are urged to call the Bangor Police Department at 207-947-7382. You can leave an anonymous message pressing 6 on their Tip Line.