A suspected militant was arrested on Wednesday after wounding two policemen with a knife near the parliament in Tunis, Tunisia's interior ministry said, a rare incident in a country that has improved security since deadly attacks in 2015.

The assailant was known to authorities and said after the attack that he considered the police to be "tyrants", according to the statement.

One of the policemen was taken to hospital for treatment after being wounded in the neck, while the other was only lightly wounded, it said.

"I saw a young man with a thick beard trying to kill a policeman. He put the knife in his neck before he was pursued by a second policeman," a witness told Reuters.

Large numbers of police were deployed to the Bardo square in the aftermath of the attack, a witness said. Blood could be seen on the ground in the square.

The square is opposite the parliament building and close to the Bardo museum, where 21 people, mostly European tourists, were killed in an attack by three gunmen in March 2015.

Tunisia suffered two other major attacks that year, one against tourists at the beach resort of Sousse and the other against presidential guards in the capital.

The 2015 attacks severely damaged the economy of the North African country, which has a large tourism sector at its Mediterranean beaches. Since then, security has been boosted at strategic sites while authorities have cracked down on militants, dismantling dozens of cells.

Tunisia was the only Arab country where a long-serving leader was toppled in the region's 2011 uprisings without triggering civil war or large-scale violence.

The interior ministry said Wednesday's suspect had confessed that "he had adopted Takfiri thought three years ago and believes that killing security forces is a form of jihad". It gave no more details about his identity.

Source: Khaleej Times