MOGADISHU, July 5 (Xinhua) -- At least two guards were killed and four others injured after a suicide carbomb went off Saturday outside the Somali parliament building in Mogadishu, police and witnesses said.
The vehicle packed with explosives tried to enter the parliament building but was shot at by security forces guarding the Somali legislature.
"The explosion killed two police officers and wounded four others. Our forces managed to thwart that attack which was aimed at the members of parliament who are all of them safe," said Qaasim Ahmed Rooble, Somali police commander.
Witnesses said that other civilian passers-by were also injured in the explosion.
Somali lawmakers were at the time of the blast in meeting discussing the country's budget. The members of parliament were quickly evacuated following the explosion, the second in as many months.
Somali state media accused the Islamist group of Al Shabaab of being behind what they termed as "foiled terrorist attack" against Somali parliament.
The group which took responsibility for the previous attacks on parliament has not so far claimed for the last assault on the parliament building.
Two MP's were injured last month when Islamist fighters carried out suicide carbomb attack and armed assault on the parliament which left 12 people dead, including five Al Shabaab militants.
The group this week killed an MP and wounded another after a drive-by shooting near his home in Mogadishu. Somali government has vowed to strengthen security for lawmakers.
The Al Shabaab fighters have increased attacks in Mogadishu since the start of the holy Muslim month of Ramadan. The Al Qaeda- linked group carried out a number of targeted assassinations since the start of Ramadan.