Security Secretary Alfonso Durazo is not saying how many people have been arrested or giving any information on what organization they belong to.
His department did not respond to requests for further information Monday.
LE BARÓN, MEXICO - NOVEMBER 09: Members of local Mormon communities and relatives of the extended Le Baron family attend the funeral held for Christina Marie Langford on November 09, 2019 in Le Barón, Mexico. Three families were traveling in separate
The ambush attack occurred Nov. 4 in the Mexican state of Sonora. Authorities suspect Mexican drug cartel hitmen carried out the attack.
The victims were dual U.S.-Mexican citizens, members of Mormon communities in northern Mexico not affiliated with The Church of Jesus Christ of Latter-Day Saints.
Family members told FOX 10 that many of the people who make up the decades-old community of La Mora are leaving their lives and belongings behind. The community now dropping from about 800 to less than half of that.