COLOMBO, Feb 28 (Reuters) - The Sri Lankan rupee on Tuesday ended firmer for a third straight session on exporter and bank dollar sales, but the gains were capped by concerns about possible depreciation in the absence of central bank guidance, dealers said.
Rupee forwards were active with two-week forwards ended at 151.80/152.00 per dollar, compared with Monday's close of 152.00/152.30.
"There were some inflows and exporter (dollar) sales," said a currency dealer, who asked not to be identified.
Another dealer said a state bank sold dollars.
The rupee has been under pressure due to dollar demand from importers ahead of the traditional Sinhala-Tamil New Year in mid-April and as foreign investors continue to sell government securities, dealers said.
Foreign investors sold a net 15.37 billion rupees ($101.62 million) in the week ended Feb. 22, extending the outflow from government securities to 64.5 billion rupees.
Sri Lanka could face balance-of-payments pressure due to foreign outflows from government securities, a government document showed last week, even as the island nation was in the process of raising up to $2.5 billion from foreign borrowing.
The rupee has weakened 1.1 percent so far this year. It fell 3.9 percent last year, following a 10 percent drop in 2015. ($1 = 151.2500 Sri Lankan rupees) (Reporting by Ranga Sirilal and Shihar Aneez; Editing by Randy Fabi)