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

The number of people injured during the course of the incident is 28, the Alabama Law Enforcement Agency said Sunday.

Some of those injuries are critical, and there's a wide variety of injures, according to the ALEA.

Authorities didn't mention a suspect or suspects, or an arrest, as of Sunday evening. Police said earlier in the day there was "no public safety risk at this time."

Central Alabama Crime Stoppers is offering a reward for any information.

-ABC News' Matt Foster

President Joe Biden released a statement Sunday calling on Congress to enact "common sense" gun control legislation in response to shootings over the weekend in Alabama and Kentucky that left a total of six people dead.

"This morning, our nation is once again grieving for at least four Americans tragically killed at a teen’s birthday party in Dadeville, Alabama as well as two others killed last night in a crowded public park in Louisville," Biden said. "Jill and I are praying for their families, and for the many others injured and fighting for their lives in the wake of this weekend’s gun violence."

As he has done in previous mass shootings, Biden urged Congress to enact gun reform legislation.

"What has our nation come to when children cannot attend a birthday party without fear? When parents have to worry every time their kids walk out the door to school, to the movie theater, or to the park?" Biden said. "Guns are the leading killer of children in America, and the numbers are rising -- not declining."

Biden said the level of gun violence in America is "outrageous and unacceptable," and noted that Americans "agree and want lawmakers to act on common sense gun safety reforms."

"Instead, this past week Americans saw national Republican elected leaders stand alongside the NRA in a race to the bottom on dangerous laws that further erode gun safety. Our communities need and deserve better," said Biden.