Polk County Sheriff Grady Judd is asking for the public's help in tracking down the man suspected of murdering two people in the past two months. Sierra Hernandez, 20, was reported missing on Jan. 14, but was likely killed days prior, according to the sheriff's office. Detectives have recovered her body. Investigators say they were able to connect her murder to 26-year-old Enrique Martinez, who also goes by "KiKi." MORE: https://www.wtsp.com/article/news/local/polkcounty/sheriff-judd-reveals-link-murder-suspect-polk-county-missing-persons-sierra-hernandez/67-ff061ad1-32d3-48c1-826a-e745f6aa7de3 ►Subscribe: https://on.wtsp.com/youtube ►Website: https://www.wtsp.com/ ►Facebook: https://facebook.com/10TampaBay ►Twitter: https://twitter.com/10TampaBay