A police officer was shot outside an Immigration and Customs Enforcement detention facility in Texas late Friday night and several armed people were taken into custody, the authorities said.The shooting took place outside the Prairieland Detention Center in Alvarado, Texas, the Johnson County Sheriff’s Office said in a statement.The detention center, which is about 28 miles south of Fort Worth, holds people who are awaiting deportation or are accused of violating immigration laws.Around 11 p.m. on the Fourth of July, officers from the Alvarado Police Department responded to a call about a suspicious person outside the detention center and saw...