Two men were arrested Friday night in two separate homicides this year after new information emerged in the slayings, officials said.

Cedrick Smith, 19, of Baton Rouge, turned himself in to East Baton Rouge Sheriff’s detectives after authorities issued a warrant for his arrest in the Aug. 19 shooting death of 20-year-old Artez Hamilton, department spokeswoman Casey Rayborn Hicks said in a news release.

The sheriff’s office had not announced Hamilton’s homicide at the time it occurred. He was shot and killed about 9:20 p.m. Aug. 19 in the 4300 block of Southpark Drive and died during surgery the next day, Hicks said Saturday.

Detectives learned Smith arranged with unknown people a trade of two assault-style rifles for two handguns, Hicks said. A witness named Smith as the man spotted running from the area where Hamilton was found, she said. Smith faces counts of illegal use of a weapon and second-degree murder.

A separate suspect, George Stevenson Jr., 20, also of Baton Rouge, was arrested Friday at his residence in the Sept. 22 homicide of Henry McGuffey III, 28, Hicks said. McGuffey was found shot to death about 11:15 p.m. in the 1800 block of Jade Avenue. Another man shot in that incident survived.

Authorities followed numerous Crime Stoppers tips about a man named George being involved in the killing stemming from an ongoing dispute, Hicks said.

Stevenson was booked into the East Baton Rouge Parish prison on counts of first-degree murder, attempted first-degree murder and illegal use of a weapon.