http://elpatin.com/desaparece-un-skater-que-intento-socorrer-a-una-victima-del-atentado-de-londres/Here is the translation:
Ignacio Echevarria went back home from a skate session when he found one of the biggest tragedies that the city of London has ever lived in many years, the terrorist attack of this last weekend. He was circulating on his bike with the skateboard tied on his back when he witnessed how one of the terrorists stabbed a woman. "On that moment he got off the bike and hit the aggressor whit his board while the other two hit him on the back, and they left him liying on the floor", some of Ignacio's friends tell to the newspaper El Pais. After the struggle, his friends lost track of him and he hasn't been found nor identified yet.
From that moment, his family has gone through all the hospitals of the zone but they haven't found him. The ones closest to him explain that he never used to carry his Identity Card with him when he was on a skate session, so during the attack he was probably undocumented. Spanish ministry of internal affairs, Juan Ignacio Zoido, has tried to spread a message of calm by saying that, as the attack is very recent, he should be sedated: "the majority of the victims that have been intervened are still sedated. Only 48 hours have passed since the terrorist attack", has declared Zoido to the radio station Cadena Ser.
Ignacio Echevarria is 1,75 meters tall, was wearing Vans shoes and was dressed in jeans and a black sweater. We hope to receive soon the news that he has been found so that this nightmare ends soon for his family and friends.