Update 13 January: The man under arrest for this attempted robbery is 34 years old and has a criminal record, police have said today. As he held up the supermarket, he grabbed a cashier from behind and put the knife to her neck to try to force her to hand over the money. A shopper grabbed a trolley and launched it at the thief who was pushed to the ground by the force, dropping the knife in the process. The robbery happened in the Mas o Menos supermarket, which I think is now a Hiperdino.
Original post 12 January: Three women needed medical treatment after a Los Cristianos supermarket was held up just before 6pm this evening.
At 17.47pm emergency services were called to the scene in Avenida Juan Carlos I with reports that a robbery was in progress, being carried out by a man armed with a knife. The supermarket has not been named but this is the main road down into Los Cristianos to the fountain roundabout and on down past the Princesa Dácil hotel.
National Police attended the scene and called paramedics out to attend to a cashier who needed medical attention, as well as two women who had suffered anxiety attacks. Initial reports from 112 say that the robber has been detained.