A suspected letter bomb has reportedly exploded at a building in the Netherlands, prompting a response from bomb disposal experts.
The package exploded at a mail sorting company in Kerkrade, a town in the south of the country.
That item was first reported to the police at 8.33am and the building's employees were evacuated.
No injuries have been reported and an explosives team is on site conducting an investigation.
Reports suggest that a second suspicious package exploded at an office in the Sloterdijk industrial estate on the west side of Amsterdam at around 8am on Wednesday.
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"It is as yet unknown whether there is a connection with the explosion of a letter package this morning in Amsterdam," the Limburg police said.
Bomb letters were delivered to companies in Amsterdam, Rotterdam, Utrecht and Maastricht last month, reported nos.nl
None of those devices exploded and police have not yet arrested anyone in connection with the incidents.
Dutch forensic experts are currently examining all the letters in an effort to track down the sender.
It is not known whether this morning's explosions are related to the letters that were sent last month.
In total, police are now aware of 10 threatening letters and six actual letter bombs containing explosives, Dutch News said.
