Collapsed people get first aid after a panic on this year’s techno-music festival Love Parade 2010 on Saturday in Duisburg, Germany.

Duisburg, Germany ? At least 19 people died and more than 300 were injured on Saturday when revelers at the Love Parade music festival in the western German city of Duisburg set off a stampede in a crowded access tunnel, police said.

The stampede occurred as the final act of the day was beginning at the festival, which up to 1.4 million people were attending, according to local media.

Witnesses told of how ever more people, some drunk, attempted to get into the festival grounds by walking through a tunnel that led under a highway and up to the former freight railway station where the massive party was taking place.

Sixteen people had died on the scene when the crowd in the tunnel panicked, with some being trampled to death, police said. More victims died later in the hospital. The festival grounds were reportedly, at the time of the crush, closed off due to the high number of people already inside.

Early today, police drastically increased the number of people reported injured to 342 from an earlier estimate of 80. A police spokesman could not provide information on the severity of the injuries.

German Chancellor Angela Merkel expressed her sorrow and shock at the fatal accident.

“In these difficult hours my thoughts are with the relatives of the victims. My sympathies and my sorrows go out to them,” the chancellor said.

“The young people came to celebrate, instead there were deaths and injuries. I am appalled and distressed at the suffering and pain,” she said.

Police said that 10 people were resuscitated at the scene by emergency workers.

The identities and nationalities of the dead have not yet been released.

The Love Parade, one of the world’s largest electronic music events, had been founded in Berlin in 1989 as a peace parade shortly before the fall of the Berlin Wall.

German President Christian Wulff said “such a catastrophe causing death, suffering and pain during a peaceful festival of joyful young people from many countries is terrible.”

The president called for a full and immediate investigation of the incident.

The exact cause of the accident is not yet clear, although witnesses said that police had been informed of the dangerous build-up of people shortly before the fatal crush occurred.

Video footage from the crush showed people clambering over fences and up concrete walls to escape from the overfilled tunnel.

A spokesman for the Duisburg city council said many of the injuries resulted from people falling from temporary steel fences at the site as they attempted to escape.