Tens of thousands of truckers stayed off the roads on Monday after talks with Indian officials to cut taxes and diesel prices broke down, threatening to push up prices of food and commodities across the country. “We are on an indefinite strike until our demands are met,” said Charan Singh Lohara, president of the All India Motor Transport Congress, which says it represents 6 million trucks across the country. Talks with the government would continue, Lohara said, but a prolonged strike could nudge up prices of fruits and vegetables and disrupt supplies of other commodities. The government threatened on Monday to take action against the truckers if the strike continued.