After the Supreme Court’s detrimental ruling in the AGR case, Tata Sons may put fresh capital into its debt-ridden telecom arm, Tata Teleservices. Tata Group’s telecom company has a negative net worth of Rs 17,876 crore and owes dues worth Rs 19,256 crore in adjusted gross revenue (AGR) to the government. Tata Group’s holding company has issued a letter of comfort to introduce fresh capital, the Business Standard reported, citing sources.