The 46-year-old man is suspected of having taught his son, who lived in Syria, how to make explosives and how to use them. The man is a Russian citizen living in Sweden and has previously been convicted of a felony weapons violation and for breaking the Swedish law against explosive substances.
When searching the man's home, police found messages to his son on his computer containing detailed information on how to make explosives, says district prosecutor Ronnie Jacobsson.
"It's clear that the son needed instructions on how to make explosives, how much to use and how to use them without being injured," Jacobsson says.
Police believe that the man's son was going to use the explosives to blow up a prison wall in Syria's largest city Aleppo.
This is the first time that the 4-year-old law is being invoked, and Jacobsson says that this case shows that the law could be effective.
"It's a clear signal that we can use this law, and I believe that we have evidence enough to prosecute this person," Jacobsson tells Radio Sweden.
The man denies the charges and claims that he did not teach his son anything that he did not already know.