US government officials are scrambling to find bed space for some 15,500 unaccompanied immigrant children who have poured over the southern border in record numbers. US Customs and Border Protection officials reported Saturday that more than 5,000 minor immigrants are being held in facilities along the Mexican border — including a make-shift tent facility in southern Texas, CBS News reported. Nearly 10,500 others are being sheltered in emergency shelters by the Department of Health and Human Services, CBS said. The border crisis comes as Homeland Security Secretary Alejandro Mayorkas said Sunday that unaccompanied minors will not be turned away. But border officials are being overwhelmed by the numbers — more than 9,400 children crossed the border illegally last month, a February record, and the number is expected to spike again this month when more than 500 migrant minors are crossing daily. “The staggering number of children in CBP custody is both heartbreaking and profoundly concerning,” Neha Desai, a lawyer for some of the children, told CBS.