A young man died after falling from a wall Sunday during the first day of the San Fermin festival in Pamplona, Spain's most famous bull-running festival, police and local officials said.
Police said they were investigating what caused the man, who was not carrying any identification on him at the time, to fall from an ancient wall that circles the historic centre of the northeastern town.
The man was not carrying any identity documents but police said they found a bank card that had been issued in Ireland on the body, the AFP reported.
He had been dead for several hours before his body was found, public radio RNE reported, adding the authorities want to speak to his traveling companion.
Another 89 people suffered minor injuries, mostly cuts, the Spanish Red Cross said in a statement. Five had to be taken to hospital, it added.
Earlier Sunday thousands of people dressed in white and wearing traditional red scarves gathered in Consistorial Square to watch the famous "chupinazo," when fireworks are set off to herald the start of nine days of festivities in the northern town.
"Men and women of Pamplona, long live San Fermin," town councillor Uxue Barkos, a member of the ruling coalition in the Navarra region, shouted from a balcony overlooking the crowd as she lit the first firework.
The festival features a range of concerts, street parties and dances as well as bullfights and the running of the bulls when six bulls are released in the narrow, cobbled streets of the old town.
The run takes place each day at 8:00 (0600 GMT) over an 850-metre (yard) course, with the runners trying to stay close to the bulls without falling over or being gored.
With Sunday's fatality the event, which was made famous in Ernest Hemingway's 1926 novel "The Sun Also Rises", has now left 15 people dead since 1911.