(CNN) -- Three people were arrested in Copenhagen Friday on suspicion of planning a terror attack, Denmark's Security and Intelligence Service said.
The three are a 22-year-old Jordanian citizen, a 23-year-old Turkish citizen who lives in Denmark, and a 21-year-old Danish citizen who lives in Egypt, a statement from the intelligence service said.
They have been charged with illegal possession of automatic weapons and ammunition, the statement said.
Steen Hansen, in the communications department of Copenhagen police, confirmed that a number of arrests had been made.
The investigation will be led by Copenhagen police in collaboration with the intelligence service, he said.
The three suspects are expected to appear before a judge in the Danish capital Saturday, he said.
The arrests were made at two addresses in connection with an terror investigation, the intelligence service said, and searches are taking place at a number of properties in the Copenhagen area.
CNN's Kim Norgaard contributed to this report.