Alva Review-Courier -

TAPACHULA, Mexico (AP) — About 600 mostly Cuban migrants who were part of a mass escape from a southern Mexico immigration detention center a day earlier remained at large Friday evening, immigration authorities said.

Mexico's National Immigration Institute said in a statement that rather than the 1,300 escapees it reported Thursday night, only 645 migrants had actually fled. It said only 35 of those who escaped had returned without explaining why it had lowered its figures.

The center was holding 1,745 people at the time, nearly double its capacity, the statement said.

The escape began with C...