The 44-year-old man who killed his girlfriend, ex wife and two teenage children at their home in Zwijndrecht sent an email to colleagues before killing himself, the Telegraaf reports on Tuesday.

Cees K had discovered his girlfriend was unfaithful to him and behind death threats he and his family had been receiving.
‘I wanted to get away from it all… my children and ex wife are so important that I decided to take them with me. They will go to heaven, I will go to hell,’ the email said, according to the Telegraaf.
The man had stabbed his family, including children aged 16 and 17, the paper said. The couple divorced two years ago.
Police broke into the family home on Monday morning after being alerted to the email by the security company where K worked. He was still alive but died later.
Police told the Telegraaf they would not comment on the case or confirm the existence of an email until after their preliminary investigation.