Detainers are requests that a jail notify ICE if a person is going to be released from custody, and that the jail hold the person until ICE officials can arrive.

ICE told ABC 7 that it issued detainers to Napa County jail regarding Hernandez Morales in 2014, 2015 and 2016. None of those detainers were honored, according to the report.

Henry Wofford, spokesperson for the Sheriff’s Office, said the department would not address Hernandez Morales’ immigration status and deferred to ICE. Hernandez Morales had family in Napa, he said.

Napa County Board of Supervisors chairman Ryan Gregory said at the press conference on Thursday afternoon that the county just learned about ICE’s statement hours earlier, and it would seek additional information from ICE regarding the claims made in its statement.

Gregory said that in 2010, Hernandez Morales was arrested, brought to the Napa County jail and later released to ICE. He noted that the county’s policies changed since passage of state laws that require counties to limit interactions with immigration agents.