Kate and Gerry McCann have thanked the public for the support they have received since their daughter Madeleine went missing. The couple issued a statement saying they had received thousands of letters. "Kate and Gerry McCann today expressed their profound thanks and gratitude to all of those who have shown them their support over the last 136 days," the statement said. "Kate and Gerry have received thousands of letters from around the world, and the numbers continue to grown week on week. "They are comforted knowing that Madeleine remains in people's hearts and prayers." The statement came as the couple attended mass in their home town of Rothley for the first time since returning from Portugal. The couple walked hand in hand from their home to The Catholic Church of the Sacred Heart. Their twins, Amelie and Sean, walked a few minutes ahead of them with other family members to avoid being filmed or photographed. The couple were followed by photographers and camera crews as they made their way from the house. After the hour-long service, Mr McCann released a short statement saying: "It was comforting to be amongst friends and family praying for Madeleine today. "We thank them for their continued support." Special catholic prayers, including a bidding and a rosary prayer, were said for Madeleine during the service. The pair are under intense media scrutiny at the moment following a week of fevered reporting and speculation in both the Portuguese and British press. They are officially being treated as suspects by Portuguese police in the disappearance of their daughter Madeleine. The four-year-old went missing on May 3 from the family's holiday apartment in Portugal. :: Richard Branson has pledged to give the McCanns £100,000 in legal fees if they are charged.