MEXICO CITY — Authorities in the Mexican state of Sonora say a shootout at a wake in a border town across from Yuma, Arizona has left one person dead and two wounded.

Local and state police, as well as Mexican marines responded to the shooting Thursday evening in San Luis Rio Colorado.

People had gathered at a funeral home to mourn a man killed a day earlier in his home.

Gunmen arrived and exchanged fire with some mourners who were also armed. Authorities found at least 50 shells littering the scene.

One mourner was killed and one was wounded. One of the attackers was also wounded.

The Sonora state prosecutor's office said in a statement that four people -- two attackers and two who were at the wake -- were arrested.