RIVERVIEW — Inside the party Friday night, investigators say Tyrell Sidney Bragg was causing problems. After several altercations, security guards ordered him to leave.
Outside the party, the trouble got worse.
Gunshots fired into a crowd near the Riverview rental hall left two dead.
Investigators traced some of those deadly bullets to a .380-caliber handgun they say was wielded by Bragg, a 21-year-old Tampa man arrested late Saturday in connection with the murder of 18-year-old Iesha D. Washington, who would have been a senior this fall at Spoto High School.
And that may not have been the only gun, investigators said Sunday.
Empty shell casings found at the scene indicated the possibility of a second shooter with a gun of a different caliber, the Hillsborough County Sheriff's Office said.
That may have been the gun used to kill Craig Thompson, 22, outside the party on U.S. 41 west of Progress Village.
But investigators are still examining forensic evidence and gathering witness accounts. They haven't identified a possible second suspect, sheriff's spokesman J.D. Callaway said.
"It is far from a done case," Callaway said.
Between 300 and 400 teens and young adults attended the party that started Friday night and went into early Saturday, investigators said. Anyone who was at the party or with information about the shootings is asked to contact the Sheriff's Office.
"I just want to thank the community, whoever played a part in helping," Washington's mother, Vanetta Scott, told Bay News 9. "But it doesn't bring my daughter back."
Three witnesses had pointed investigators toward Bragg, the Sheriff's Office said.
One witness selected Bragg from a sequential lineup as the shooter whose bullets struck Washington before she collapsed. Another witness also identified Bragg as firing a weapon into the crowd, investigators said.
A third relayed this account from the day after the party: Bragg told the witness he attended the party and admitted to killing someone, saying he "slumped" someone.
Bragg asked the witness to hide a .380-caliber Bryco handgun, according to investigators, who later recovered the weapon from the witness.
Under questioning, Bragg said he went to the party but ran away from the sound of gunshots. He denied having a gun or firing one.
Bragg was charged with second-degree murder and being a felon in possession of a firearm. He was being held Sunday in the Hillsborough County Jail without bail.
State records show Bragg has been arrested several times in Hillsborough County since he was 14.
That first charge was for battery. From there, Bragg accumulated additional battery charges over the years, and was also accused of burglaries, trespassing and obstructing or opposing an officer.
One arrest in 2008 came from charges of disrupting a school campus or function and battering an official or employee.
He pleaded guilty after his most recent arrest in March 2010 on charges including robbery and burglary. A judge sentenced him to about one year in county jail, according to state records.
Times researcher Caryn Baird contributed to this report. Stephanie Wang can be reached at firstname.lastname@example.org or (813) 661-2443.