Ghana midfielder Kevin-Prince Boateng has condemned the near-simultaneous attacks in Paris that killed nearly 130 people on Friday night.
The attacks have been declared as an "act of war" organised by the Islamic State (IS) militant group, French President Francois Hollande said.
The attacks, carried out by eight gunmen and suicide bombers, were "organised and planned from outside".
The targets included bars, restaurants, a concert and a high-profile football match. IS claimed the attacks.
Mr Hollande has declared three days of national mourning.
He raised the security threat level to its highest point and imposed a nationwide state of emergency. Hospital officials now put the number of injured at 300.
Eighty are in a critical condition.
Boateng, who is chasing a contract with Italian giants AC Milan, was saddened by the attacks which forced him to go on Twitter to express his sadness.
"We are living in a crazy world!!! . Let us pray for the people in Paris," Boateng wrote on his Twitter.
#wtf we are living in a crazy world!!! ðŸ™ðŸ¿ðŸ™ðŸ¿ðŸ™ðŸ¿ let us pray for the ppl in Paris!!! #shocked pic.twitter.com/uv6y3tdQMJ
— Kevin-Prince Boateng (@KPBofficial) November 13, 2015
These are the deadliest attacks in peacetime France, and only the fourth time since WW2 that a state of emergency has been imposed.
The last time was during a 2005 wave of riots in poor suburbs.
It is the worst atrocity in Europe since the 2004 Madrid bombings.