PARIS - France will revise its security strategy in order to better respond to terror attacks after a series of shootings and suicide bombings struck the capital city of Paris on Friday, French Defense Minister Jean-Yves Le Drian said Sunday.

"The scale of the threat has changed. It has militarized and our defense strategy must be adapted to that. This is a considerable challenge and France will meet it," Le Drian told local weekly Le Journal de Dimanche.

"After the launch of Sentinel operation (after attacks on the Charlie Hebdo magazine in January), it became necessary to define a new strategy on the use of the country's armed forces," he added.

On Friday night, French President Francois Hollande declared a state of emergency after what he called "unprecedented terrorist attacks" in which at least 129 people were killed and 352 others were injured, of whom 99 are in critical situation.

After the attacks, Hollande ordered an additional deployment of 1,500 military officers in Paris to ensure the safety of public places.

The government, which has already deployed 10,000 soldiers across the country after the January attacks, is keeping the Vigipirate security system at the highest level.

During Friday's bloodshed, three groups of armed men targeted restaurants, coffee shops, a concert hall and a stadium, using multiple tactics such as shooting, suicide bombing and hijacking hostages in a coordinated manner.

Seven assailants blew themselves up, one of whom was identified as Ismail Omar Mustafa -- a French national known to have links with Islamist militants.

A Syrian and an Egyptian passport have been found near the bodies of two suicide bombers near the Stade de France stadium. According to Greek officials, the holder of the Syrian passport passed through the Greek island of Leros in October.(Xinhua)