Authorities in El Salvador on Friday raided the local offices of Panamanian law firm Mossack Fonseca, seizing documents and equipment, the country's attorney general's office said.
"A large quantity of computing equipment has been found in the office of Mossack Fonseca," the attorney general's office said on Twitter, adding that the company's staff had removed their sign from the entrance a day earlier. It cited an employee saying the company was moving.
Attorney General Douglas Melendez personally oversaw the raid, his office said.
The Panama-based law firm is at the center of an international data leak scandal, being referred to as the Panama Papers, that has embarrassed several world leaders and shone a spotlight on the shadowy world of offshore companies.
Founding partner Ramon Fonseca told Reuters in Panama this week that his firm, which specializes in setting up offshore companies, had broken no laws and that all its operations were legal. He also said his firm had never destroyed any documents or helped anyone evade taxes or launder money.
Governments across the world have begun investigating possible financial wrongdoing by the rich and powerful after the leak of more than 11.5 million documents, dubbed the "Panama Papers," from the law firm that span four decades.
In the United Kingdom, a Twitter campaign launched on Friday has called on British Prime Minister David Cameron to step down from his post a day after he admitted to profiting from an offshore trust fund set up by his father.