6 killed in shootings during "Halloween" celebrations in the United States

Dallas Police Chief Daniel Cuomo said authorities are investigating whether the aforementioned attacks are linked to one another.

Cuomo explained that the motives for the attacks are not yet known, noting that a number of people have been detained and are being questioned.

He added: "This is a really large-scale incident, and the area where it occurred is very large. We are currently questioning some people we have detained, and we are still trying to understand the nature of the connections between all the shootings here."

In the city of Bloomington, Illinois, one person was killed and another was seriously injured in a shooting incident that occurred near Illinois Wesleyan University.

Authorities reported that 6 other people were injured in the incident, noting that their injuries were not serious, and pointing out that it is not yet clear whether they were struck by gunfire.

In the city of Newark, Delaware, 6 people were injured in a shooting incident that occurred near the University of Delaware campus.

Also, one person was killed and 8 others were injured in a shooting incident that occurred on a street near a stadium in the US state of Alabama, following a football game.

Birmingham Police Chief Michael Pickett told reporters that the shooting occurred near Legion Field stadium, following the annual "Magic City Classic" American football game.