Love Parade disaster: Angela Merkel joins commemoration service

Franz-Josef Overbeck, bishop of Essen, stands in front of candles and flowers laid down for the 21 people who died at the Love Parade Photograph: Patrik Stollarz/AFP/Getty Images

From left, Norbert Lammert, president of the Bundestag, Angela Merkel, Bettina Wulff, her husband Christian Wulff and North Rhine-Westphalia's state premier Hannelore Kraft attend a church service at the Salvatorkirche church Photograph: Friedrich Stark/AFP/Getty Images

Mourners pay their respects at the commemoration service Photograph: Friedrich Stark/AFP/Getty Images

Rescue helpers attend the commemoration service at the Salvatorkirche church Photograph: Friedrich Stark/AFP/Getty Images

Rescue helpers mourn as they attend a commemoration service at the Salvatorkirche church Photograph: Friedrich Stark/AFP/Getty Images

Candles and flowers are laid down at the site where the 21 Love Parade victims died in Duisburg Photograph: DANIEL ROLAND/AFP/Getty Images

Rescue helpers lay floral tributes at the tunnel where the disaster took place Photograph: Patrik Stollarz/AFP/Getty Images

Mourners lay floral tributes Photograph: Patrik Stollarz/AFP/Getty Images

A man places a candle near a wreath from the Duisburg taxi drivers outside the tunnel in Duisburg Photograph: Wolfgang Rattay/REUTERS

A cross with 21 candles for the 21 victims who died in a stampede during the Love Parade on July 24, 2010 is seen at a funeral service at the football stadium in Duisburg, western Germany Photograph: Daniel Roland/AFP/Getty Images