A letter bomb has exploded at the headquarters of banking group ING in Amsterdam, police said on Thursday early afternoon.
The bomb went off when an employee opened the envelope at the company offices in the south of the city. The employee was checked for smoke inhalation but was thought to be otherwise unharmed.
Earlier on Thursday, another letter bomb was found at a software company in Leusden but was made safe by explosives experts.
The letter, delivered to tech company Unisys which specialises in payment traffic systems, aroused suspicion after a police warning on Wednesday when two letter bombs exploded in Amsterdam and Kerkrade. No one was hurt in those explosions.
The letters were sent by a blackmailer demanding to be paid in bitcoins.
In early January a number of letter bombs were sent to hotels, petrol stations and garages and a real estate office. All were preceded by a blackmail letter demanding payment.
Thank you for donating to DutchNews.nl
The DutchNews.nl team would like to thank all the generous readers who have made a donation in recent weeks. Your financial support has helped us to expand our coverage of the coronavirus crisis into the evenings and weekends and make sure you are kept up to date with the latest developments.
DutchNews.nl has been free for 14 years, but without the financial backing of our readers, we would not be able to provide you with fair and accurate news and features about all things Dutch. Your contributions make this possible.