A car bomb exploded in Bogota on Thursday, wounding seven people and damaging hundreds of buildings in an early challenge to the country's new President Juan Manuel Santos.
The car exploded at 5:30 am (1030 GMT) near a building housing the offices of Radio Caracol, breaking windows and causing other damage but no deaths.
It had been packed with some 50 kilograms (110 pounds) of ammonium nitrate and a pipette of propane gas, said city mayor Samuel Moreno.
Seven people were hurt, including three who were hospitalized, Moreno said.
Santos, who took office on Saturday, rushed to the scene where he told reporters his government would not be swayed by "an act of terrorism."
"We are going to fight terrorism with every means available to us," he said.
Many locals said they were woken up by the explosion on a main avenue which was largely deserted at the early hour.
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