Several world leaders and international organizations condemned Saturday the ramming attack in the Swedish capital Stockholm, which left five people dead and more than 12 others wounded. British Prime Minister Theresa May expressed her condolences to her Swedish counterpart Stefan Lofven on the victims of the ramming attack, which took place on Friday. British prime minister's office said in a statement that May has offered to work with Lofven against extremist attacks and the two leaders have agreed on the importance of working together to address these threats, during a telephone conversation, according to the BBC. While, Chinese President Xi Jinping expressed his deep condolences to King Carl XVI Gustaf of Sweden and the families of the victims, strongly condemning terrorist attack, according to a statement issued by the Chinese Foreign Ministry. Chinese president stressed his country's desire to strengthen cooperation with Sweden and the international community as a whole, to safeguard security and stability of both countries as well as the world. Furthermore, General Secretariat of the Organization of the Islamic Conference (OIC), based in Jeddah, Saudi Arabia, condemned the terror attack, as OIC Secretary-General Youssef bin Ahmed Al-Othaimeen said: "Perpetrators of this terrible crime are enemies to humanity and must be brought to justice." Al-Othaimeen expressed his condolences to the families of the victims, government and people of Sweden, wishing the wounded a speedy recovery. He stressed on the OIC's principles on terrorism, confirming the organization's resolve to continue its engagement with the international community to eradicate this dangerous phenomenon of terrorism. Meanwhile, France expressed solidarity with Sweden following the attack, as French President Francois Hollande voiced his dismay and anger over the attack. French presidency issued a statement expressing its sympathy and solidarity with the families of the victims and with all Swedes, stressing that the fight against terrorism is unrelenting and must come as a priority for European countries. A truck ran over pedestrians on Friday in Stockholm, killing at least five people and wounding many more. The incident took place in the vicinity of the headquarters of the Swedish parliament. Swedish authorities announced Friday the arrest of a person believed to have been involved in the attack. Swedish media said, the truck belongs to a company, which reported it stolen earlier in the day. Swedish Prime Minister urged citizens to take caution and follow police instructions following the attack. In a televised statement, Lofven said, Swedish government is exerting its utmost effort to determine the cause of the attack, which he described as a "terrorist," expressing his sincere condolences to the victims and their families.