José Sousa Luís explained that means have been reinforced, such as Maritime Police boats and lifeboats and watercraft for maritime rescue from the Institute of Help for Shipwrecked People.

"In the particular case of Parque Tejo, during the events, we will also have a reinforcement of marine boats from the Portuguese Navy", advanced the official, adding that, in the riverside area "there are several patrols".

More than a million people are expected in Lisbon until Sunday for WYD considered the biggest event of the Catholic Church and which includes the presence of Pope Francis.