What happens when asylum seekers cross the Quebec-U.S. border illegally?

Like much of the border shared by Quebec and four American states, the Roxham Road boundary in Hemmingford, Que. is unremarkable.

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The dirt road is a 15-minute drive from the official port of entry at Lacolle. It runs through a wooded area, past the occasionalcountry home,before coming to an abrupt end.

There are no physical obstacles preventing people from stepping over the invisible line that divides Champlain, N.Y. from Hemmingford, Que. just a snowy ditch and a faded sign warning people to go no further.

It's one of the hot spots where increasing numbers of asylum seekers are crossing illegally from the U.S.into Canada.

360 view: What does the Roxham Road border look like?

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To navigate this 360 view of the illegal crossing spot at RoxhamRoad, tap or click on the video and drag to look up, down or side to side.

How do police deal with someone who crosses illegally?

By the time an individual or a groupofasylum seekers reaches the Canadian border at Roxham Road,RCMP agents say they usually know about it.

About an hour's drive away, the Montreal RCMP Operational Communications Centre monitors the border using cameras and surveillance equipmentand notifies agents on the ground when a vehicle or pedestrian is approaching.

Once a person is in sight, an officer on the ground will inform them that if they cross, theywill be committing an offence under the Canadian Customs Act.

"We'll tell them that if they do cross the line that they will be arrested," saidBrian Byrne,the staff sergeant responsible for the RCMP'sintegrated border enforcement team.

"We tell them that they should enter through a port of entry, we tell them that it's five kilometres east of here and if they don't respect the warning then we arrest them."

Asylum seekers crossing from the U.S. to Canada usually want to be arrested, because once they clear processing they can make a refugee claim.

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Because of the Canada-U.S. Safe Third Country Agreement, asylum seekerswho arrive via the U.S.are required to request refugee protection there.

If they show up at an official Canadian point of entry, and they don't meet an exception to the agreement, they'll be turned away.

But if they cross illegally, it's a different story.

Crossing at a spot like Roxham Road is illegal, but that doesn't meanthe handcuffs always come out. It's up to agents to do a risk assessmentand determine what kind of approach is appropriate in each case.

RCMPCpl. Franois Gagnon says alone person crossing with a backpack is likely going to be approacheddifferently than a family carrying an infant.

What happens next?

After being taken into police custody, would-be refugee claimantsare questionedandtheir identities are checked.

Once cleared by the RCMP they'll behanded over to theCanada Border Services Agency for processing.

At an official checkpoint, such as the Lacolleport of entry, the CBSA will interview individuals, fingerprint them and fill out paperwork.

Authorities say more often than not, asylum seekers are allowed to walk away after they've been processed. They can stay with family or friendsor at a shelter untiltheirrefugee hearing date.

However, there are exceptions: individuals will be detained if they cannot be identified, if they are considered to pose a threat, or if there's a risk they might not show up fortheir hearing.