Photos of detained migrants crowded into cells at the US border - with one holding up a sign reading simply "help" - have been released as part of a new report warning of "dangerous" overcrowding.The memo was sent to the Department of Homeland Security by its Inspector General on Tuesday, containing nine photos taken at border facilities in the Rio Grande Valley over a week in June.The report notes that the area has seen a 124 per cent increase in attempted border crossings in the last year, and published new images of women, children, and men cramped into rooms with standing room only - highlighting the inadequate preparation on the US side of the border.The report says border patrol facilities were holding roughly 8,000 detainees in custody during the inspector's June visit, with 3,400 held longer than the 72 hours permitted. Of those 3,400 held too long,1,500 were held more than 10 days. In several photos, detainees can be seen wrapped in the foil blankets that have become ubiquitous in photos of facilities with little else to offer the thousands of migrants they're hosting. The alert, which relates to four of the five Border Patrol facilities visited by investigators for the DHS Office of the Inspector General, highlights the nature of unaccompanied minors, styled as Unaccompanied Alien Children, and families in the area. Meant to alert DHS to take action, it exists as “an escalation of the security concerns raised in our prior alert.”826 of the 2,669 children at Border Patrol’s facilities had been held longer than the 72 hours generally permitted under CBP's Transport, Escort, Detention and Search, or TEDS, standards and the Flores Agreement. Of the 1,031 unaccompanied minors held at the Centralized Processing Center in McAllen, Texas, 806 had already been processed and were awaiting transfer to HHS custody. Of those 806, 165 had been in custody longer than a week. More than 50 of these minors were under seven years of age.Conditions are also unsanitary, the alert said.“Children at three of the five Border Patrol facilities we visited had no access to showers,” the alert reads, citing TEDS violations. “At these facilities, children had limited access to a change of clothes; Border Patrol had few spare clothes and no laundry facilities.”TEDS standards require CBP to make a reasonable effort to provide a shower for adults after 72 hours. The alert states that “single adults had not had a shower in CBP custody despite several being held for as long as a month."All facilities, they say, had infant formula, diapers, baby wipes, and juice and snacks for children, but at two observed facilities hot meals were not provided to children until they arrived. This, too, is a TEDS violation. Dietary restrictions for health and religious reasons are also not being taken in account, and “many single adults had been receiving only bologna sandwiches,” leading to constipation and need for medical attention.The overcrowding had led to cells containing detainees with standing room only, such as a room for 41 filled with 88 men photographed in the report. The inspector references an earlier manager who called the situation “a ticking time bomb” as it notes that one facility visit ended early because the observation was “agitating an already difficult situation.”“Specifically, when detainees observed us, they banged on the cell windows, shouted, pressed notes to the window with their time in custody, and gestured to evidence of their time in custody.”Read the full report here.