Twitter plans to set up a research and design center in the Indian technology hub of Bangalore, its first such facility outside the US, as part of wider moves to accelerate growth in major emerging markets.

The San Francisco-based social network bought Bangalore-based mobile start-up ZipDial for about $40 million last month, and plans to use ZipDial's team as the basis for its new R&D facility, according to people familiar with the matter.