The victim was shot to death outside a market just South of Kerman. Family members have identified him as 46-year-old as Antonio Reynoso.
Investigators say the shooting happened around 12 p.m. Sunday. It is not clear what lead up to the gunfire but detectives spent hours at the scene collecting evidence and talking with witnesses.
" It doesn't really matter to me, whoever did this I hope they'll bring to justice," the victims niece Sandra Valdez said. "There's a greater power out there and justice will prevail."
Sandra Valdez said her uncle leaves behind four children. Authorities have not yet released any other information about the person they detained Sunday night.