Another Sacramento mass shooting suspect has been arrested in connection with the mass shooting in Sacramento, California that left six people dead and wounded a dozen others.

Police arrested Smiley Martin, 27. He was charged with possession of a firearm by a prohibited person and possession of a machine gun.

Thirty-one-year-old Daviyonne Dawson was also arrested late Monday and was booked on suspicion of being a prohibited person in possession of a firearm, according to a San Francisco Chronicle report.

Dawson was allegedly seen "carrying a gun in the immediate aftermath" of the shooting incident. Police said that they do not believe it was used in the shooting.

Sacramento police said that Dawson is currently not charged with crimes directly related to the shootings. The police department added that detectives are continuing to investigate the crime and identify additional suspects.

Dawson posted $500,000 bail and was released on Tuesday, according to an unnamed source.

Meanwhile, Martin was among the dozen people seriously wounded at the mass shooting. He is set to be transferred to the county jail once his medical care is complete, according to The Washington Post News report.

Martin was the older brother of Dandrae Martin, 26, who is also a suspect in the mass shooting.

The younger Martin is charged with assault and illegal possession of a firearm.

Officials noted that none of the charges filed as of Tuesday were for homicide related to Sunday's shooting.

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Sacramento Mass Shooting

A law enforcement official said that Martin had taken a live video on Facebook hours before the shooting had waved a handgun.

Investigators are working to identify whether the weapon was used in the shooting, according to a USA Today News report.

Officials investigating the matter believe that the brothers possessed stolen guns and are working to review their financial documents, call records, and social media messages to know how and when they acquired the weapons.

Investigators are currently looking at hundreds of pieces of evidence and reviewing more than 170 videos and photos shared through an online portal that was created for the public.

District Attorney Anne Marie Schubert said in a statement that she expected more arrests.

Schubert described the incident as "highly complex involving many witnesses," with videos of several types and significant physical evidence.

Sacramento Police Chief Kathy Lester did not note what kind of handgun was used in the crime. She added that officials are not yet certain whether the victims were targeted.

Twelve people were wounded, with at least four suffering critical injuries. At least seven of the wounded have been already released from hospitals.

Meanwhile, the Martin brothers have criminal histories that include violent crimes.

The older Martin was ordered to remain in prison when he was up for early release amid a 10-year sentence for domestic violence and assault with great bodily danger a year ago.

A Sacramento prosecutor said that the 27-year-old Martin's criminal conduct is violent in lengthy, adding that he has committed several felony violations.

READ MORE: Sacramento Mass Shooting: 6 Dead, 12 Injured in 'Senseless Tragedy'

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Written by: Mary Webber

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