Thanh Cong Phan appeared in a federal court in Washington state after being arrested at his home in Everett on Monday night and just more than 24 hours after he allegedly mailed the 11 packages

The man who allegedly mailed 11 packages to military bases in the DC area on Monday has been pictured after being arrested on the other side of the country late that night.

Thanh Cong Phan appeared in a federal court in Washington state after being arrested at his home in Everett on Monday night and just more than 24 hours after he allegedly mailed the packages.

He has been charged with one count of shipping explosive materials and could face a maximum of 10 years in prison if convicted.

The FBI identified the 43-year-old as a suspect by the rambling notes included in the packages, which mirrored his history of writing perturbing letters to the military.

Packages were delivered to Fort McNair, Fort Belvoir, Dahlgren Naval Station, Joint Base Anacostia-Bolling, the mail screening centers at the CIA and Secret Service, and other locations.

At least two were stuffed with explosive components such as black powder, fuses and circuit boards, and all were said to be accompanied by 'rambling and disturbing' notes.

Officials said none of the bombs appeared to be fully functioning, and that they were intended to frighten more than to injure or cause actual damage.

He has been charged with one count of shipping explosive materials and could face a maximum of 10 years in prison if convicted. Pictured is his home in Everett, Washington, where he was arrested late Monday night

The packages were found at these three locations near the Capitol as well as CIA and White House mailing facilities

One of Phan's neighbors told CBS they were in 'in shock,' by the revelation he may have been the one to send in the threatening packages.

'I don't know what to say, it's so close to my house,' the individual said.

Phan's motive was not immediately clear, but the official said there was no immediate connection to terrorism.

Investigators also told NBC the suspect may have an 'obsession' that motivated him to deliver the bombs. According to the outlet he may have had 'long-standing grievances' and 'had probably expressed them before'.

Defense Secretary Jim Mattis told reporters on Tuesday that all of the packages sent to Defense Department facilities are under the control of the federal authorities.

'Basically there's a set procedure, they went through the procedure,' said Mattis.

'We've had nobody injured and all those packages and all the evidence is accessible and is the hands of the FBI right now.'

The first package raised alarm at The National Defense University at Fort McNair in Washington, DC around 8.30am.

The package was addressed to the National Defense University and found to contain black powder, which can be used to make explosives.

An X-ray also found what appeared to be a GPS and a fuse.

The building was evacuated and later cleared around 1:15pm.

'At 12.10pm, 52nd Army Explosive Ordnance Disposal from Fort Belvoir, VA, confirmed the package tested positive for black powder and residue, Army spokesman Michael L. Howard said in a statement.

'The X-ray conducted indicates suspected GPS and an expedient fuse were attached. The package was rendered safe. No injuries are reported,' he added.

Parcels also arrived at a CIA mail-sorting facility, a White House mail-sorting facility, Naval Support Facility Dahlgren, Joint Base Anacostia-Bolling and two locations on Fort Belvoir - the National Geospatial-Intelligence Agency and another defense university.

One of Phan's neighbors told CBS they were in 'in shock,' by the revalation he may have been the one to send in the threatening packages. The first of the packages was reported at The National Defense University at Fort McNair around 8.30am

Another package was also discovered at two sites at Fort Belvoir in Virginia in the afternoon, addressed to The National Geospatial-Intelligence Agency and the defense university

Packages were also sent to the Naval Support Facility Dahlgren (pictured), a White House mail-sorting facility and a CIA mail-sorting facility

Pictured above is Joint Base Anacostia-Bolling, where another suspicious package was sent Monday

Previous reports said there were six packages sent in total. But the total number has been reported as 11.

All were investigated and deemed to be safe. The FBI is analyzing the packages at their lab in Quantico, Virginia.

One of those packages contained liquid in a vial and a circuit board, according to law enforcement officials.

Some of the deliveries were also accompanied with some long letters, described as rambling and disturbing, according to officials.

Officials do not believe the packages are linked to the bombings in Austin, Texas.

CNN reported that the military bases where the packages were sent make up the backbone of military presence around the Capitol.

Phan has a prior criminal record, having been arrested in 2011 near Woodland, Washington, the Daily Democrat reported.

He was apprehended after stealing a 2000 Isuzu Rodeo from a gas station in Redding in May, 2011. Police there put out a 'lookout' alert for the car, and he was arrested at 7.30am on the 23rd after a police chase.

Phan was charged with unlawfully taking a vehicle and felony evading.

At one point Phan also called into the California Highway Patrol to tell officers he had killed his brother, who was contacted and confirmed to still be alive.