@imau kung kukuha ka ng NBI overseas ganito un procedure. Note sa Saudi po to pero most likely the same sequence. First, download the form required for NBI application from Philippine embassy Singapore. Then, have a 2x2 photo with White background taken within three months attached to your form and also bring other identification card. After that submit it to the embassy, then they will have you fingerprinting in another form. Next, they will issue that form to you and you will have to send it to Ms. SANDRA P. SOBIDA
Mailed Clearance Section
3rd Floor, NBI Clearance Bldg.,
UN Avenue, Ermita, Manila
And don't forget to attach the required fee for the NBI clearance. Di ko alam sa SG kung magkano so inquire k n lang. Then after 5 days they will issue your NBI CLEARANCE.
Tip: un iba nilalagay n lang un cash sa dun envelope. Wag mo n lang ideclare.
Based on my experience, maayos naman sila, they even send my NBI twice kasi sabi ko di ko nareceive. They will even scan it and send it to you if you need it fast.