Police in Cyprus found two improvised unexploded bombs in a car park on Monday close to a checkpoint used by thousands of people on the ethnically divided island.
There was no immediate claim of responsibility for the discovery, a first since Greek and Turkish Cypriots started mingling freely 18 months ago.
The Ledra Palace crossing point, which straddles the bustling centre of the divided city and is always teeming with people, was shut for several hours.
A Reuters witness said police carried out two controlled explosions on a package found in a car park on the Greek Cypriot side of the checkpoint.
Police were alerted by a milk carton which had wires protruding from it, the witness said.
It was later found to contain a quantity of TNT dynamite and a crude detonation device. A second similar device was found close to the first, but without being concealed in a container.
The car park lies directly opposite the entrance to a compound of British UN peacekeepers who patrol part of the "green line" splitting Cyprus, and is a short distance from the Greek ambassador's residence.
British peacekeepers in the area tightened security around their own facility last year as part of increased vigilance because of the insurgency in Iraq.