Police identified Jonathan Sapirman, 20, as the shooter in the Greenwood Park mall incident. Elisjsha Dicken, a 22-year-old armed shopper, shot and killed him.

Greenwood police Chief James Ison said during a news conference that Sapirman began shooting after leaving a washroom at the Greenwood Park Mall shortly before it closed Sunday evening.

Also read: Who is Elisjsha Dicken, Greenwood Park mall bystander who killed shooter?

According to Ison, Sapirman kept shooting people until he was shot and killed by 22-year-old Elisjsha Dicken of nearby Seymour, who was out shopping with his girlfriend.

“Many more people would have died last night if not for a responsible armed citizen,” According to the chief, authorities are still attempting to figure out what motivated the attack.

The coroners’ offices in Johnson and Marion counties named the slain victims as Pedro Pineda, 56, Rosa Mirian Rivera de Pineda, 37, of Indianapolis, and Victor Gomez, 30, also of Indianapolis.

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Despite the fact that Dicken was legally armed, the mall bars people from carrying guns on its premises.

As of July 1, Indiana law enables anyone 18 or older to carry a firearm in public, with the exception of individuals barred for reasons such as a criminal conviction, a restraining order, or a serious mental disease as determined by a court. The Republican-controlled Indiana legislature kept provisions in the bill that allow private property owners to prohibit weapons.

Also read: Greenwood Park Mall shooting: Are guns allowed in Indiana shopping centres?

The attack on Sunday was the latest in a string of mass shootings in the United States. Schools, churches, grocery stores, and a July Fourth parade near Chicago have all turned into killing grounds in recent months, though the country’s remarkable murder rate is often visible more clearly in individual killings that rarely make major headlines.

Authorities initially stated that four of the casualties were female and one was male, but they then amended that to two males and three females, including a woman and a 12-year-old daughter who were injured.

Also read: Greenwood Park Mall shooting: Everything we know so far

Ison claimed that after entering the mall, Sapirman went inside a bathroom for nearly an hour before emerging and opening fire. Investigators suspect Sapirman spent that time prepping and potentially assembling a disassembled gun he had packed in his rucksack. He managed to fire 24 bullets in two minutes.

Although police have not determined a reason for the attack, Sapirman’s relatives told investigators that he had recently gotten an eviction notice from his residence.