A teenager was killed and another injured when unknown suspects opened fire at them after an accident at Do Darya in Karachi's Defence Housing Authority (DHA) area on Sunday morning, police said.

Two youths were travelling in a Mercedes and were on their way to have breakfast at the beach when a minor accident occurred, Superintendent Police Clifton Dr Asad Malhi said.

After the accident, suspects travelling in double-cabin vehicle opened indiscriminate fire on the car at around 9am.

As a result, the two passengers sustained bullet wounds. They were transported to a private hospital where doctors pronounced Zafir, 18, dead, the SP said.

Zaid, 20, was admitted to the hospital for treatment. He sustained a bullet wound on his hand and his condition was stated to be out of danger, the SP added.

Police carried out raids with the help of CCTV footage and, subsequently, four suspects were detained for interrogation. Two vehicles were also impounded.

The victim, a resident of Defence Housing Authority was a first year student at DHA College, said SP Malhi.

Higher authorities took notice of the incident.

Home Minister Sindh Sohail Anwar Siyal took notice of the matter and ordered Additional Inspector General Karachi Mushtaq Ahmed Mahar to file a report immediately.

The minister also ordered the immediate arrest of the culprits involved in the incident.