The attack took place before sunset. He was attacked from behind that made him fall on the ground after losing consciousness momentarily.
The robbers took off with a gold necklace. The authorities have not made any arrest in connection with the robbery as yet.
Saloinen was taken to the a hospital for further check-up.
He was on vacation and was attending a photography tour in Brazil.
Till latest updates, he was doing well and did not sustain serious physical injuries, said his assistant.