Heres some gang arrests linked to organised looting of pharmacies during the riots.

'Significant' arrest made in Baltimore DEA raids
Baltimore drug leader arrested in drug investigation

The Drug Enforcement Administration said money, drugs and gangs are behind the uptick in violence in the Baltimore Police Department's Western District.

The DEA and other law enforcement partners, including Baltimore City police, served search warrants on 1625 and 1627 W. North Ave. at 4 a.m. Thursday. Officials said there had been a lot of drug and gang activity at those locations during and after the riots last month.

Police detained 13 men and women. They questioned them at the Western District, but only one was arrested. Bryan Franklin Stewart, 31, is known to police as the leader of the Crips sect in Baltimore called the Rolling 60s. He faces 10 charges for having a 9 mm gun and drugs.

According to court records, Stewart has a criminal history dating back to 2002 that includes convictions for stealing cars; burglary; possessing, manufacturing and distributing drugs; and carrying a concealed deadly weapon.

Gary Tuggle, assistant special agent in charge of the DEA Baltimore district office, said 17 pharmacies were looted during the civil unrest, and he said gangs were behind much of it.

"We believe that in some instances gang members specifically targeted the pharmacies for the Schedule II drugs, that being OxyContin, oxycodone, Vicodin and Percocet," Tuggle said.

The DEA said they never know what they are going to find when they execute a search warrant and they usually go in expecting the worst. They said the raid offered one more block of information about what is going on in the Western District in terms of the increase of violence. Tuggle said that's enough drugs to keep the city high for one year.