There is no point going to the embassy here in kathmandu , they will do nothing for you instead prepare an application for fingerprinting and submit it to police headquarters in naxal. they will send you to lab at maharajgunj for biometrics, please remember to download the fingerprint sheet from the FBI website.
(i had used both the downloaded as well as Nepal police's biometrics sheet.) and send it to the FBI cjis division in the US. it took almost 7 months to get it back from the US.