Border patrol agents arrested a total of 253 illegal aliens within an hour at the Texas border in the Rio Grande Valley Sector, the U.S. Customs and Border Protection (CBP) announced on Friday. The arrests of two large groups of illegal aliens were made south of Mission, Texas, late on Thursday, the CBP announced in a news release. The groups, which had 166 and 87 people, consisted mainly of families and unaccompanied children. The group of 87 people had turned themselves in. Other instances of illegal alien arrests were also noted by the CBP in its news release. The agency announced that border agents in the Rio Grande Valley (RGV) sector received a tip about a possible stash house. The agents and local law enforcement on Wednesday arrested the 38 illegal aliens in the stash house, some of whom were trying to flee when the agents arrived at the scene. RGV agents also arrested another eight people on …