Two teenagers were arrested and charged on Tuesday in connection with fatally shooting four people and wounding 32 others, most of them teenagers, at a 16th birthday party in an Alabama dance studio on Saturday night, the authorities said on Wednesday.

Sgt. Jeremy Burkett of the Alabama Law Enforcement Agency said at a news conference on Wednesday morning that the teens, Ty Reik McCullough, 17, and Travis McCullough, 16, both of Tuskegee, Ala., were arrested at around 8 p.m. on Tuesday night. They were each charged with four counts of reckless murder, Sgt. Burkett said.

The arrests come after three trying days for the residents of Dadeville, a tight-knit community of about 3,000 people that is 60 miles northeast of Montgomery. The authorities had offered scarce details in the wake of the shooting.

On Monday, officials identified the four people killed as Shaunkivia Nicole “Keke” Smith, 17; Philstavious Dowdell, 19; Marsiah Emmanuel Collins, 19; and Corbin Dahmontrey Holston, 23. They did not provide information about who had opened fire or why.

The Alabama Law Enforcement Agency said on Monday that the police had recovered shell casings from the shooting at the Mahogany Masterpiece dance studio. The studio hosts Zumba and line dancing classes for children and teenagers and was planning a dance showcase to celebrate its second anniversary on April 29, according to its Facebook page.

This is a developing story.