#ParisAttacks: Check if your loved ones are safe via Facebook

At least 120 people have been reported dead and dozens more left injured in the attacks.

FILE: Mourners leave candles outside of the Carillon bar in the 10th district of Paris on 14 November 2015, following a series of attacks in and around the city, leaving at least 120 people killed. Le Petit Cambodge, adjacent to the Carillon bar, was the scene of another attack, which killed at least 12 people. Picture: AFP

JOHANNESBURG - As the world still tries to come to terms with the multiple attacks in Paris, Facebook has set up a safety check which enables people to check whether or not their loved ones are in the affected areas.

The figure of those killed in the attacks has been revised to over 120 with reports suggesting the gunmen and bombers systematically executed people, leaving dozens more injured.

The Bataclan music hall where California rock band Death Metal was performing, the Stade de France where French President Francois Hollande was among soccer match spectators and a number of restaurants in Paris came under attack.

Facebook founder and CEO Mark Zuckerberg said in a post, "My thoughts are with everyone in Paris. Violence like this has no place in any city or country in the world. We've activated Safety Check, so if you're in Paris you can mark yourself safe or check on your friends and family."

Hollande has closed the country's borders and declared a state of emergency.

"I have called the cabinet which is going to meet soon. This state of emergency will be decreed which means certain places will be closed. The second decision I've made is closing borders, we have to assure ourselves that no one can enter. This is a terrible hardship."

WATCH: Paris Attacks: Witnesses describe terrifying ordeals

At the same time, the South African government says it is working closely with officials in Paris to establish whether any South Africans are among the injured or dead.

The Department of International Relations and Cooperation spokesperson Nelson Kgwete says government has joined Obama in offering condolences to the families affected.

"The South African government sends its deepest condolences to families of the deceased, to the French government and the people in general."

He says officials are working round the clock to establish if anyone from this country was harmed in the explosions.

"The South African Embassy in Paris in closely monitoring the situation, working with authorities, and will report back to Pretoria during the course of the day on any possible involvement of South African citizens in the attacks."

Kgwete says there is a 24-hour hotline that South Africans can call if they know family members are in France.

"Any worry that they may be having about the wellbeing of their relatives in Paris, that number to call is 012 351 1000."


Several countries including Russia and America are on high alert

Authorities in the US have bolstered security in its biggest city and at the sight of the 911 terror attacks in New York.

The New York Police Department employed extra security at high-profile locations around the largest US city in response to the attacks in Paris.

The department maintains there are no known imminent threats, but says it is taking the precautions just in case.

Many French students and tourists in NYC gathered at Union Square to hold a vigil last night.

In Moscow, police are on a state of high alert after last night's attacks in Paris.

Islamic State earlier in the week released a video threatening to attack Russia "very soon" in revenge for its aerial strikes in Syria.

Russian president Vladimir Putin has sent his condolences to the French president and says Moscow is ready to provide any and all assistance to investigate these terrorist crimes.

Police in Moscow have been on high alert since Wednesday after Islamic State issued a video threatening they would reach the Kremlin and bring it down.

Experts say that for the group now not to attack Moscow after saying it will do so would be a big blow to their prestige.

Russia was singled out by the group for conducting airstrikes against Islamic State strongholds in Syria since the end of August.

Ordinary Russians watched last night's events unfold in the French capital with disbelief.

For many, it brought back memories of a siege by Chechen rebels 13 years ago at a Moscow music concert in which 130 hostages were killed over a three day period.

Messages of support, condolences and speedy recovery wishes to the injured have been echoed throughout social media:

There is light at the end of the tunnel. While France goes dark, the World lights up in support. #ParisAttacks pic.twitter.com/CkkTqHWA18

Thinking of the victims,their families & the many affected by the horrific #ParisAttacks.Today our hearts are broken pic.twitter.com/xhdGJYlIX0

There are no words to show my admiration for the courage these people display. #ParisAttacks pic.twitter.com/nKQmbzXxNc

Thoughts & prayers with all those in #Paris tonight. Sad times. #999Family #StayStrong #ParisAttacks pic.twitter.com/FGI9wUk6Rp

Be strong #Paris

#ParisAttacks #France pic.twitter.com/hBCeJLBrN6