The Alabama Law Enforcement Agency has updated the number of people injured during the shooting Saturday night to 32.

Police are still investigating the incident and are trying to "solidify a motive and potential suspects," the ALEA said.

-ABC News' Matt Foster

Vice President Kamala Harris tweeted Monday that "enough is enough" in the wake of "another senseless mass shooting," and called on state and federal legislators to "step up and act."

"Parents shouldn't have to pray their babies come home same from school or a birthday party," Harris tweeted. "The majority of Americans, including gun owners, support commonsense gun safety laws. We need leaders in state houses and Congress with the courage to step up and act."

Tallapoosa County Coroner Mike Knox has identified the four people declared dead from Saturday night's shooting: 23-year-old Corbin Dahmontrey Holston, 19-year-old Marsiah Emmanuel Collins, 18-year-old Philstavious Dowdell and 17-year-old Shaunkivia Nicole Smith.

Dowdell and Smith were both seniors at Dadeville High School.

-ABC News' Will McDuffie

The Dadeville Police Department has "solid leads" as they search for the suspected shooter, but authorities still need help from the public, Dadeville Police Chief Jonathan Floyd told ABC News on Monday.

Floyd asked anyone with photos or videos from Saturday night's sweet 16 party to come forward.

Due to the department's manpower and resources, Floyd said the Alabama State Bureau of Investigations is taking the lead with the investigation.

-ABC News' Elwyn Lopez

One of the four people killed in the mass shooting in Dadeville, Alabama, was a star high school football player and track team member, his coach told ABC News.

Philstavious "Phil" Dowdell, a senior at Dadeville High School, had committed to attending Jacksonville State University on a football scholarship, said coach Roger McDowell.

IMcDowell said Dowdell was at a sweet 16 birthday party at a venue in Dadeville Saturday night when a shooting erupted.

In addition to those killed, at least 28 people were injured. McDowell said Dowdell's mother, who was a chaperone at the party, was among those hurt, shot twice in the legs.

Rich Rodriguez, Jacksonville State's head football coach, said in a post on Twitter Sunday, that the death of Dowdell and the other victims is a "senseless tragedy."

"He was a great young man with a bright future," Rodriguez tweeted. "My staff and I are heartbroken and hope that everyone will support his family through this difficult time."

McDowell said he also knew a teenage girl who was killed in the shooting. He said she was a senior and the manager of the track and football teams.

In addition to being a standout wide receiver, Dowdell was also a member of the high school track team, McDowell said.

"Phil was humble with a major smile," McDowell told ABC News. "He had one goal to get to the NFL and take care of his mom."

-ABC News' Elwyn Lopez