Ten youths have been arrested by Canadian police on suspicion of planning to travel to Iraq and Syria to join Islamic State, the BBC reports.

All 10 had their passports confiscated after they were detained at Montreal’s Trudeau International Airport at the weekend.

Police said in a statement on Tuesday that none of the suspects had been charged, but investigations were ongoing.

Their families have been informed.

“These are very difficult times for the relatives and loved ones of the persons arrested, as the decision to leave the country was not that of the family, but of a single family member,” the statement said.

“As a result, family members often find themselves at a complete loss and unable to understand the decision made by the youth.”

Police said they could not disclose the identity of the suspects or provide information about what led to their arrests.