( CNN ) -- Police charged an 18-year-old with murder in the case of a University of Florida student last seen eight days ago , a police spokesman said Friday . Officer Ben Tobias announced that the Gainesville police department charged Pedro Bravo with the death of Christian Aguilar . He did not offer further details . Ron Kozlowski , one of Bravo 's attorneys , told CNN on Friday night that he has `` not been presented with any new evidence thus far . '' Bravo 's family is distraught and worried about the murder charge , Kozlowski added . The 18-year-old Aguilar was last seen about 6 p.m. September 20 , according to a police statement . His body still has n't been recovered , said Tobias , who urged the public to reach out to authorities with any information on the case . `` We would ... encourage property owners , residential or business , who may have lime rock roads on their property , that were accessible to the general public , to search those properties for any suspicious areas of ground that appear to have been disturbed , '' Tobias said . `` We are also requesting information from anyone who may have seen a suspicious vehicle , likened to a Blue Chevy Blazer , in any remote areas on the night of Thursday , September 20 . '' Police told Aguilar 's family about the murder charge -- and , with it , the presumption the college student was dead -- about an hour before the public announcement , Tobias said . `` Christian 's family is heartbroken , as expected , '' the police spokesman told CNN by e-mail . Bravo told investigators that he 'd gotten into `` an altercation with Aguilar '' on the night the college student went missing , police said . Bravo then left Aguilar in a parking lot in the central Florida city , prompting police to warn that Aguilar may be disoriented and/or seriously injured . Aguilar 's father told CNN affiliate WCJB that his son disappeared after a fight over a girl . After talking with police September 21 , Bravo was held for mental examination after threatening to harm or kill himself . He was later charged with depriving a victim of medical care , a third-degree felony , and was in custody at the time he was charged with murder , according to Tobias . Authorities have used helicopters and K-9 units to search for Aguilar , to no avail . The young man 's family members , meanwhile , have plastered the area with fliers , taken to Twitter to generate leads and invited a nonprofit search group to help look for him alongside family members and police . Gainesville police posted a fresh plea Friday night , on the department 's Facebook page , asking volunteers to report to the Florida Farm Bureau at 9 a.m. Saturday to resume the search for Aguilar . Bravo 's family initially volunteered to help in the search , only to be politely turned down by Aguilar 's family , Kozlowski said . The lawyer said his client will make his first court appearance Saturday morning . At that time , a judge will assess the case and set bail for Bravo or decline to , thus assuring that the suspect will remain in custody . CNN 's Joe Sutton and Greg Botelho contributed to this report .
NEW : The suspect 's family is distraught and worried , one of his lawyers says . Christian Aguilar , 18 , was last seen September 20 in Gainesville , police say . Pedro Bravo told investigators he got into a fight with Aguilar that night and left the scene . He said Aguilar had been drinking heavily at the time.