NTT DoCoMo announced that based on its 26% stake in Tata Teleservices, the company will make additional 14.6 billion yen (US$171.2 million; US$1=85.3 yen) investment in Tata as part of a rights offering by the Indian partner, according to a March 31, 2011 press release by DoCoMo. Transaction is slated to complete in May this year. It is reported that DoCoMo's investment will be used for coverage expansion and quality enhancement of Tata's 3G network launched in November 2010.