"Leave church doors open"- Pontiff declares

In the wake of the Paris attacks, churches have now been working on upgrading security but Pope Francis advises against this.

The pope maintains that the church must stay open despite all these terror fears.

"Please, no armoured doors in the Church, everything open," the 78-year-old pontiff told pilgrims in St Peter's square, Italy.

"There are places in the world where doors should not be locked with a key. There are still some but there are also many where armoured doors have become the norm.

"We must not surrender to the idea that we must apply this way of thinking to every aspect of our lives, ..." Francis said, "To do so to the Church would be terrible."

He urged the Church to keep its doors open to lapsed believers who are considering returning and to the hundreds of thousands of migrants arriving in Europe from Africa, the Middle East and South Asia.