President Barack Obama will be visiting Boston on Thursday morning to commemorate the lives lost and victims wounded in Monday’s Boston Marathon bombings. More than 170 people were injured and three killed: 8-year-old Martin Richard of Dorchester, Krystle Campbell, 29, of Medford, and Boston University graduate student Lu Lingzi.

Massachusetts Governor Deval Patrick announced the news during a press conference on Tuesday afternoon. Obama will be attending an 11 a.m. interfaith service at the Cathedral of Holy Cross in the South End, less than a mile from the finish line, where two blasts went off within 12 seconds of each other on April 15 at approximately 2:50 p.m.

“Boston is a tough and resilient town,” said Obama in the White House on Monday night following the tragedy. “So are its people. I’m supremely confident that Bostonians will pull together, take care of each other and move forward as one proud city. And as they do, the American people will be with them every single step of the way.”

Obama spoke with Patrick and Boston Mayor Tom Menino on Monday, telling them they have “every single federal resource necessary to care for the victims and counsel the families.”

Obama will now be here to counsel families himself. The public has been invited to attend Thursday’s service. Doors will open at 8 a.m., and tickets will be released on a first come, first serve basis to those in line.

Patrick’s office has warned guests to be prepared for “airport-like security,” advising in a press release that those attending should plan accordingly for lines and delays. No bags, sharp objects, liquids or signs should be brought to the scene, and public transportation is “highly encouraged,” as there is limited parking and road service around the cathedral.

First Lady Michelle Obama will allegedly be joining the President tomorrow, along with federal, state and local officials. First responders, medical personnel, victims and their families, as well as volunteers from the Boston Athletic Association have been invited to attend.

“This service is an opportunity for the community to come together in the wake of the tragic events at the Boston Marathon this week,” reads the release.

The Cathedral of the Holy Cross is located at 1400 Washington Street.