More than 10,000 people have been evacuated from a skyscraper in Mexico after police found a handmade explosive device in a car parked in the building.
The 55-storey Torre Mayor building was completed in 2003
Bomb squad officers removed a device made of tubes attached to a mobile phone from a car parked at Torre Mayor in Mexico City, police said.
The government is investigating the incident but no one has yet claimed responsibility for the bomb scare.
The 225m (740-foot) Torre Mayor is the tallest building in Latin America.
Mexico City police chief Joel Ortega said police had received an anonymous phone call revealing the car's location and number plate.
The bomb was made with three gunpowder-filled metal tubes, cables, a mobile phone and tied together with tape.
But if it had exploded, damage from the blast would probably have been limited to the car, Mexico City's Public Security Department said.
The building's administrator, Felipe Flores, said police spent about three hours searching the building after the tip-off.
The 55-floor tower, located in Mexico City's main business district, was opened in 2003.