Rebecca Serafin, son Cameron missing from Fairfax County

Rebecca and Cameron have been missing since April 7. Photo: Fairfax County Police

The 32-year-old mother who is suspected of abducting her 5-year-old son more than a week ago was spotted in Birmingham, Ala., police say, amidst fears she may be taking the young boy to the West Coast.

Police on Tuesday say the pair was last seen in the baggage claim area at McCarran International Airport in Las Vegas on April 11.

The father of Cameron Serafin says he fears his ex-wife, Rebecca Serafin, might be taking their son, Cameron, 5, across the country. Joe Serafin says he doesn’t know, though, if his former wife has friends or family on the west coast.

Serafin says investigators believe his ex-wife boarded a plane at BWI-Marshall Airport and may be making her way to Los Angeles. Serafin says that something similar has happened before:{ }his ex-wife and then-3 year old son had vanished in July of 2011.

Serafin tells{ }ABC7 he never learned who she was with or where his son was kept during that time.

Last week, Serafin also that Rebecca has had a history of substance abuse, using prescription drugs and heroin.

Serafin, 32, is being charged with felony parental abduction, police sources tell WTOP, based on the belief that she has taken Cameron out of Virginia where she and Joe Serafin share custody.

Police sources tell WTOP Rebecca and Cameron had been tracked from Baltimore to Birmingham, but that their exact location is unknown.

Fairfax County Police detectives Rebecca Serafin took off from the Reston area with her young son last weekend.

Police believe that Rebecca Serafin was supposed to return her 5-year-old son, Cameron, to his father on April 7, but she never did. Authorities say that the woman may have changed both her own appearance and that of her son.

Authorities have recovered Serafin's car and personal belongings, but still do not know of her whereabouts. A warrant has been issued for her arrest on charges of custodial interference.

Rebecca Serafin is described as standing 5-feet-4-inches tall and weighing between 120 and 130 pounds, while Cameron is 3-feet-5-inches tall and weighs about 40 pounds. Cameron may also be using the last name Love.

Her ex-husband and Cameron's father said she emptied out her bank accounts. He said he is frantic.

Serafin explained the two share custody - on one week, off the other. This past Monday was the father's turn. But mother and son never showed up.

After calling the boy's school and talking to the mothers family, he said he learned the mother had packed up several bags and told her family she was going on a weekend lake house trip.

Police said they found the mother's 2001 Toyota RAV4 abandoned in Arlington at the Lyon Village Shopping Center near Spout Run. Police didn't find any bags, but there was a copy of what police said could be used as a passport photo of Cameron with his newly darkened hair.

Cameron's father said beyond the attempts to avoid detection, he said his son may be in danger.

Anyone with information is asked to contact Fairfax County Police or Crime Solvers.