LONDON (AP) -- A small explosion outside the British Embassy in Santiago, Chile caused minor damage but no casualties, the Foreign Office said on Monday.

The explosion at about 10:15 p.m. Sunday night was heard throughout the exclusive Las Condes neighborhood where the embassy is located, according to the daily El Mercurio. A Foreign Office spokesman said it wasn't immediately clear whether or why the embassy had been targeted. "We share the area with a number of other buildings, including the Israeli Embassy, a tobacco company, banks and other things," a Foreign Office spokesman said, speaking on condition of anonymity in line with department policy. He said the embassy had not received any threats and that an investigation was under way. About 50,000 British tourists visit Chile every year, BBC reported. The BBC's South America correspondent, Daniel Schweimler, says there is some anti-British sentiment among small extreme right-wing groups in Chile because of the 1998 arrest in London of the former military leader, Augusto Pinochet, who died last December.