Sri Lanka's Catholic churches have cancelled Sunday mass in the capital Colombo for a second week, citing foreign intelligence warnings of threats to worshippers in the wake of the deadly Easter bombings on churches and hotels.
The rupee fell 0.3 percent to 177.15/177.60 per dollar from Thursday's close of 176.60/177.00, Refinitiv data showed.
Analysts fear it could weaken further due to outflows from stocks and government securities.
The island's currency lost 1 percent this week, but is up 3.2 percent this year, as exporters converted dollars after investor confidence stablised following the country repaid a $1 billion sovereign bond in mid-January.
The rupee dropped 16 percent in 2018, and was one of the worst-performing currencies in Asia due to heavy foreign outflows.
Foreign investors sold a net 3.3 billion rupees worth of government securities in the week ended April 30, extending the net foreign outflow to 10 billion rupees from the securities so far this year, the latest central bank data showed.
The benchmark stock index ended 0.37 percent lower on Friday at 5,438.75.
It hit its lowest close since Dec. 7, 2012, on April 23 and also posted its biggest percentage fall since Feb. 14, 2012, on the same day.
Turnover was 111.1 million rupees ($627,152), lower than this year's daily average of 580.2 million rupees. Last year's daily average was 834 million rupees.
Foreign investors sold a net 17.7 million rupees worth of shares on Friday, extending the net foreign outflow to 4.37 billion rupees worth of equities so far this year.
The latest instability follows Sri Lanka's plunge into political turmoil in October last year, when President Maithripala Sirisena abruptly removed Prime Minister Ranil Wickremesinghe and then dissolved parliament.
A court later ruled the move unconstitutional, and Wickremesinghe was reinstalled as premier.
Investor sentiment took a big hit as a result of the 51-day political crisis, leading to credit rating downgrades and an outflow of foreign funds from government securities.