Flights have been halted at two international airports in Europe after security checks detected traces of explosives in the luggage of two female passengers.
Several flights were delayed at the Athens International Airport on Sunday when the police wanted to perform additional searches on a passenger.
As the woman was already onboard an Aegean airline flight to Madrid in Spain, it was diverted to Palma de Mallorca airport.
Aegean said in a release that it was notified by the Athens airport for additional security check to a passenger.
"The aircraft has landed on the Palma de Mallorca Airport, where all the additional security checks were conducted for the aircraft and the passengers, as provided by regulations. The security checks revealed no issues and the aircraft departed from Mallorca to its final destination Madrid," it added.
On the same day, departures were suspended at Stockholm Skavsta Airport in Sweden after traces of explosive material were found in the bag of an elderly woman travelling to Poland.
The lounge was cordoned off, and the check-in area and baggage hall were partly evacuated.
Stockholm Skavsta Airport Duty officer Roland Lindkvist was quoted by The Independent as saying: "The baggage and departure halls were evacuated, which has affected departing flights but not arrivals.
"The bag in question belongs to an elderly lady and she is cooperating with us. She says she does not know how the powder got on her bag.
"There are no known threats to the airport and we have no reason not to the trust the person in questions."
Flights services resumed at 2pm local time after the police cleared the reopening of the terminal.
Located 100km from Stockholm, Skavsta Airport recorded 1.8 million passengers in 2015.
The airport introduced explosive trace detection (ETD) equipment in March last year to detect traces of explosives by a sample taken from the hand luggage and the contents of the bag, such as computers, tablets and mobiles.
Image: Skavsta Airport recorded 1.8 million passengers in 2015. Photo: courtesy of Richard Evers / Stockholm Skavsta Airport.