Car Bomb Kills At Least 79, Injures Over 100 In Somalia's Capital City

A truck bomb exploded in Mogadishu, Somalia, killing at least 79 people, with some reports suggesting over 90 casualties. It is the deadliest attack in over two years, occurring during rush hour at a busy intersection. The explosion targeted a tax collection center. While no group immediately claimed responsibility, the Somali president blamed Al Shabab, a terrorist group linked to al Qaeda. Al Shabab has previously claimed responsibility for similar attacks in Somalia.

Which terrorist group was blamed for the explosion by the country's president?

What is the connection between Al Shabab and al Qaeda?