Four people have been killed and multiple people injured during a shooting at a teenagers’ birthday party in the small town of Dadeville, Alabama,

The Alabama Law Enforcement Agency said the shooting happened at about 10:30pm on Saturday (local time).

There was no initial confirmation about what led to the shooting.

It was not immediately known if a suspect was in custody.

“We’re going to continue to work in a very methodical way to go through this scene, to look at the facts, and ensure that justice is brought to bear for the families,” said Jeremy Burkett, a sergeant with the Alabama Law Enforcement Agency.

Pastor Ben Hayes, who serves as the chaplain for the Dadeville Police Department and for the local high school football team, said most of the victims were teenagers because the shooting occurred at a birthday party for a 16-year-old.

He said the shooting has rocked the small town where serious crime is rare.

Local media and witnesses have said several wounded people, many of them teens, were transported to local hospitals for medical attention.

Annette Allen said her grandson Phil Dowdell, a high school senior due to graduate within weeks, was among those who died.

He was celebrating his sister Alexis’s 16th birthday when gunfire ripped through the party.

“He was a very, very humble child. Never messed with anybody. Always had a smile on his face,” Ms Allen told the Montgomery Advertiser, adding that Mr Dowdell’s mother was also shot and wounded.

“Everybody’s grieving,” Ms Allen said of the small community.

Local media reported that the shooting happened at a dance studio.

Local TV showed images of crime scene tape around the Mahogany Masterpiece Dance Studio and neighbouring buildings, and a heavy police presence.

“This morning, I grieve with the people of Dadeville and my fellow Alabamians. Violent crime has NO place in our state, and we are staying closely updated by law enforcement as details emerge,” Alabama Governor Kay Ivey said in a statement posted on social media.

Dadeville, which has a population of about 3,200 people, is in east Alabama, 92 kilometres north-east of the state capital Montgomery.

US President Joe Biden has been briefed on the shooting.

Two killed in Louisville shooting

An unidentified suspect fired a gun into a crowd of hundreds in a Kentucky park, leaving two people dead and four wounded Saturday night.

Police were called around 9pm (local time) to Chickasaw Park in Louisville, authorities said.

“Hundreds of people were in the park at the time of the shooting, when someone started shooting into the crowd, hitting at least six people,” Louisville Metro Police Department Deputy Chief Paul Humphrey said.

There were no suspects in custody immediately after the shooting and police asked anyone with information to contact investigators.

“As of right now we have no witnesses,” Deputy Chief Humphrey said.

“This has been an unspeakable week of tragedy for our city,” Mayor Craig Greenberg said at the scene Saturday night, referring to a shooting on Monday in which a gunman killed five Louisville bank employees while live streaming the attack on Instagram.

“On Monday, we lost five of our fellow citizens to a horrific act of workplace gun violence.

“And now, five days later, we’re at another scene of a reckless act of gun violence.”

Police have not publicly identified the deceased other than to say they were both adult males.

The four wounded included a woman and three men.

Police were not aware of any special event taking place at the park on Saturday night, and a police spokeswoman said the crowd was not unusual considering the nice weather.

The shootings occurred within weeks of two high-profile mass shootings in Tennessee and Kentucky, which prompted local leaders to call for tighter gun control measures last week.

Wires/ABC