An apparent car bomb has exploded outside a military college in the Colombian capital, Bogota, injuring five people, police have said.
Police first said two people had died, but later revised their statement.
The blast happened at about 0900 local time (1400 GMT) around a number of army buildings in the north of the city.
Colombia is immersed in a long-running conflict between rebels, right-wing paramilitaries and state forces but attacks in Bogota have been down.
Reports said a bomb had exploded in the car park of the Nueva Granada Military University, which local correspondents say is attended by both military and civilian students.
Witnesses told local media they heard a loud explosion and saw smoke.