According to the channel, the man exited the consulate on his own and surrendered. No explosive devices were found on him.
He has been taken into custody. Police are trying establish his identity, as well as the motives behind his actions.
The police special unit BRI is inspecting the consulate building for explosive devices.
Earlier reports suggested that the man came to avenge his brother.
On Friday around 11 a.m. local time, a witness noticed the man with an explosive device, resembling a grenade or a suicide belt, entering the Iranian consulate building.
The Trocadéro square area of the city was cordoned off by the police.
It was reported that at the direction of the Paris police prefect, the BRI police special unit were deployed. These units were also involved during the terrorist attacks in Paris in November 2015.
Movement on metro lines 6 and 9 has also been suspended.