>> here's what we came looking for right here, five-point star, the number five, definite blood nation. 031 is one of the blood codes. stop snitching. we've got a worldwide picture that shows dominance of bloods throughout. >> who are you affiliated with? >> i refuse to answer your question. >> roca moreno is known to be part of the puerto rican prison gang called the niota's. officers knight and demerey would like to find evidence of how active he is or if he has any other affiliations. >> what i'm looking for is to see if the mattress has been altered. inmates are notorious for cutting holes anywhere along the seam or the sides, stuffing it with contraband. then they sew their contraband back up in their mattress. like that, we have a spot. that just shows you right there.