A second suicide bomber blew himself up near a police station in al-Qarjani district in the Tunisian capital, wounding four people, the Interior Ministry said on Thursday.

At least five people were wounded in central Tunis earlier when a another suicide attack targeted a police patrol, the government said.

The first blast took place near the intersection between rue Charles de Gaulle and avenue Bourguiba, the Tunisian capital's main thoroughfare.

Three police officers and two civilians were injured in the explosion, the interior ministry said.

Tunisia has been battling militant groups operating in remote areas near the border with Algeria since an uprising overthrew autocratic leader Zine Abidine Ben Ali in 2011.

Dozens of people died in attacks in 2015 including two against tourists – one at a museum in Tunis and another on a beach in Sousse. A third attack targeted presidential guards in the capital and killed 12.

The Islamic State (IS) group claimed those attacks.

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(FRANCE 24 with REUTERS, AFP)