The U.S. Embassy in Jakarta issued an alert to American citizens warning of a potential security threat against U.S.-associated hotels and banks in Indonesia’s second- biggest city.

The U.S. recommended heightened vigilance when visiting such locations in Surabaya, according to a posting today on the embassy’s website.

Officials in December heightened security at U.S. posts worldwide after revelations that American-held terrorism suspects received more brutal treatment than previously known under a CIA interrogation program that was ended in 2009.

The U.S. security alert for its citizens in Indonesia was reported earlier by Reuters.

The AirAsia Bhd. flight that crashed into the Java Sea Dec. 28 with 162 people on board was flying from Surabaya to Singapore.

To contact the reporter on this story: Shobhana Chandra in Washington at schandra1@bloomberg.net To contact the editors responsible for this story: Bernard Kohn at bkohn2@bloomberg.net Sylvia Wier.

Photo Credit: Children play at the Bank of Indonesia Museum in Jakarta. Danumurthi Mahendra / Flickr