May be related to the underground battles…
I just got this odd notes(google translated):
'''Six people have been trapped this Thursday in the drainage system between the Puerta de México and the Dennis Deconcini sentry box, in Nogales, Sonora state, during an attempt to enter the United States, reports El Universal .
In total, there were eight who went down to the sewers with diving suits, but Red Cross paramedics managed to rescue two of them. The group is reported to have been caught in a sewage stream.'''
https://www.en24.news/i/2020/04/sonora-they-are-looking-for-6-people-trapped-in-the-drain-between-mexico-and-the-us.html
https://actualidad.rt.com/actualidad/348776-mexico-atrapados-drenaje-frontera-eeuu