Danish police said on Wednesday they had apprehended three individuals in connection with the investigation into two blasts near Israel's embassy in Copenhagen.
A Danish police spokesperson told a press conference they were likely caused by hand grenades. No injuries were reported.
A large area was cordoned off, and pictures published by tabloid Ekstra Bladet showed heavily armed Danish military personnel guarding the embassy.
Investigators were seen wearing coverall suits as they combed the scene for evidence, tabloid B.T. reported.
The Israeli embassy was not immediately available for comment when contacted by Reuters.
Several other embassies and consulates are also located in the area.