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Brazilian federal police said on Thursday they had started questioning João Vaccari Neto, the treasurer of the country's ruling Workers' Party, as a corruption probe focused on state-run oil company Petrobras widened to include political figures.

The U.S. Securities and Exchange Commission is investigating a January 14 spike in trading in BlackBerry Ltd options that took place hours before Reuters reported that Samsung Electronics Co was in talks to buy the Canadian smartphone maker, according to a person familiar with the investigation.

In April 2011, two years before their prices sank, a slew of bond funds that were being sold by UBS’s Puerto Rico arm appeared to its brokers to be such risky investments that they balked at promoting them to their clients.