The merger of Uber’s operations in Southeast Asia with those of rival Grab may have broken competition law and could be reversed, a Singapore regulator said as quoted by CNN. The companies have two weeks to respond to the decision, which could deal a big blow to Uber’s attempt to withdraw from Southeast Asia in order to focus on other markets. Grab announced on March 26 that it had acquired Uber’s Southeast Asia’s operation in a share swap where Uber will also take 27.5 per cent of entire stake in Grab. Roughly one month after the deal was announced the Uber app remains operational in Singapore, and had been extended for one week in the Philippines, both changes were made at the request of anti-trust regulators who sought more time to assess the implications of the deal, Tech Cruch reports.