A man injured in bombing attacks is carried to Madina Hospital in Mogadishu, capital of Somalia, on Feb. 23, 2018. (Xinhua/Faisal Isse)

MOGADISHU, Feb. 25 (Xinhua) -- At least 32 people have been confirmed dead in Friday's twin bombing attacks in the Somali capital, Mogadishu, with most of the casualties being beach-goers.

A police officer who declined to be named told Xinhua on Saturday that the death toll had risen as several beach-goers succumbed to their injuries in various hospitals in the city.

"I can say so far we know 32 people have died in the Friday attacks in Mogadishu," the officer said. "The casualties increased since most of those injured, mainly young people who were from the Lido beach, died of injuries."

Al-Shabaab militants have claimed responsibility for the double car bombing attacks, one targeting the presidential palace and the other went off near the intelligence headquarters.

Somali security forces killed all five militants at the entrance of Villa Somalia, the presidential palace. One presidential guard was killed.

The militants were dressed in police uniform and drove vehicles painted in police colors, evading several checkpoints before arriving at their targets.

Mogadishu mayor Abdirahman Omar Osman said on Saturday that most of those killed were teenagers going home from Lido beach, which is near the intelligence headquarters.

On Oct. 14 last year, a truck bomb hit Mogadishu, killing more than 500 people. No group claimed responsibility for the attack, but the Somali government had laid blame on the al-Shabaab terror group.