LOWER OXFORD TWP, Pa. (WPVI) -- A judge has increased the bail for the man arrested after the mass shooting at Lincoln University over the weekend to $1 million cash.
Zecqueous Morgan-Thompson, a 21-year-old resident of Wilmington, Delaware, has been charged with carrying a concealed firearm without a license.

Chester County District Attorney Chris de Barrena-Sarobe said Tuesday that the bail was increased after a fired cartridge casing was found to be a ballistics match to the Glock pistol Morgan-Thompson was allegedly carrying the night of the shooting.
De Barrena-Sarobe said investigators cannot yet say if a bullet from that gun struck any of the victims.
Morgan-Thompson is not facing additional charges at this time, though the D.A. noted that the investigation is ongoing.
According to the criminal complaint, Morgan-Thompson told investigators the gun belonged to his mother, and he had the loaded gun on him the entire time he was on campus that day.

Lincoln University President Brenda Allen held a news conference earlier Tuesday, but couldn't answer any questions from the media, citing the need to respect the privacy of victims.
She did say, however, that the school will conduct a review of what happened that night and see if any changes need to be made.
"We will conduct an action review. Our goal is to refine our policies, procedures and protocols as needed to enhance the safety of our community," Allen said.
The shooting happened amid homecoming celebrations on Saturday night outside the International Cultural Center following the school's football game.
Jujuan Jeffers, 20, of Wilmington, Delaware, died shortly after midnight after being shot in the head.
Six other people were wounded and all are expected to survive.
Josh Maxwell is chair of the Chester County Commissioners and an adjunct professor at Lincoln University. He says a student who's among those injured in the shooting is on the mend and in good spirits.
"She knows the challenge ahead, both physically and mentally, and what I can say is that she has a very supportive group of family. She calls them her people," he said.
He says she's president of an organization on campus and is described by Maxwell as an extraordinary student leader.
"She's involved in a lot of things on campus, committed to social change in social progress. From her hospital bed, she was giving some of her friends to-dos to make sure that meetings didn't get missed, and we are continuing to move forward on campus," said Maxwell.

Authorities have said they believe that there was more than one shooter. However, investigators don't think this was a planned shooting, but rather that the violence erupted spontaneously.
Authorities are asking anyone with information to contact 1-800-CALL-FBI.
A vigil was held on Monday, as classes were canceled for a day of reflection. Classes resumed on Tuesday.