WATCH: Pope Francis declares Mother Teresa a saint

Vatican City - The Latest: Mother Teresa's canonisation ceremony underway at St. Peter's Square in the Vatican City.

Pope admits he finds it hard to say 'St. Teresa'

Even Pope Francis is finding it hard to call Mother Teresa "St. Teresa."

Deviating from his homily Sunday, Francis acknowledged it'll be hard for admirers to make the switch since Mother Teresa's saintliness is "so close to us."

As the crowd erupted in applause, he said: "So tender and rich that spontaneously we will continue to say Mother Teresa.

Charity workers retrace St. Teresa's train ride

Some members of Mother Teresa's lay branch have marked her canonization by retracing the train ride she took to Darjeeling when she was inspired to found a new religious order.

The Sept. 10, 1946 journey is celebrated as "Inspiration Day" for the Missionaries of Charity, the day when Mother Teresa says she received a "call within the call" from Jesus.

The Press Trust of India reports that some lay workers of the Missionaries of Charity took an 8-kilometer (5-mile) train ride on a tourist train in the Darjeeling hills in West Bengal state.

The Rev. Peter Lingdam, head of the lay branch's Darjeeling branch, told the Press Trust of India: "We wished to experience what Mother Teresa must have felt during that time." He said that during the journey "her life's course changed forever."

Pope says St. Teresa shamed world leaders

Pope Francis has praised Mother Teresa as the merciful saint who defended the lives of the unborn, sick and abandoned - and who shamed world leaders for the "crimes of poverty they themselves created."

Francis held St. Teresa up as a model for today's Christians during his homily for the nun who cared for the "poorest of the poor."

Speaking from the steps of St. Peter's Basilica, Francis said St. Teresa spent her life "bowing down before those who were spent, left to die on the side of the road, seeing in them their God-given dignity."

He added: "She made her voice heard before the powers of the world, so that they might recognize their guilt for the crimes of poverty they themselves created." As if to emphasize the point, Francis repeated the "the crimes of poverty they themselves created."

Hundreds celebrate Mother Teresa in Kolkata

Hundreds of people inside the headquarters of the Missionaries of Charity in Kolkata clapped with joy as Mother Teresa was declared a saint by Pope Francis.

They congregated around Mother's tomb, which was decorated with a single lighted candle, flowers and a photo of the tiny saint. A caption on the tomb read "Saint Teresa of Calcutta. Pray for Us."

Sanjay Sarka, a local high school student, said it was a special day for the city.

She said: "Mother Teresa belonged to Kolkata and she has been declared a saint. I am so proud to be from Kolkata." Hundreds celebrate Mother Teresa in Kolkata

Pakistani heaps praise on Mother Teresa

A leading Muslim philanthropist in Pakistan has described Mother Teresa as "a great social worker who dedicated her whole life to the service of humanity".

Teresa did her work without any distinction of caste or religion, said Faisal Edhi, in a message on the occasion of Mother Teresa's canonization as Saint Teresa on Sunday.

Faisal Edhi's late father, Abdul Sattar Edhi, was one of the best known philanthropists in Pakistan. Often called the "Father Teresa of Pakistan", the senior Edhi passed away on July 8 at the age of 88. People like Mother Teresa, Faisal Edhi said, help create a good environment that can assist "in ending rivalries between nations and communities".

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