Six other security personnel have been wounded in roadside blast, including one who is in critical condition.
A bomb killed at least one paramilitary Ranger and wounded six others in Karachi on Thursday, officials said.
The incident took place in the city’s eastern Landhi neighborhood, close to the Gulshan-e-Buner area, which is said to be a hideout for militants.
“A roadside remote controlled bomb planted on a motorbike went off near a vehicle carrying 10 Rangers, wounding seven of them,” said senior local police official Faisal Noor. He said the condition of two of the injured was critical.
One of the critically injured soldiers later died at the state-run Jinnah Post Graduate Medical College (JPMC), Dr Seemi Jamali, head of the hospital said.
A local intelligence official also confirmed the incident.
Rangers are currently participating in a joint operation with Karachi police to cleanse the city of terrorists and other hardcore criminals, including hired killers, gun-runners and drug peddlers.