Rabat: Nine radical Islamists jailed for their links to the 2003 Casablanca suicide bombings, which killed 45 people, broke out of a Moroccan top security jail on Monday, the Justice Ministry said.

The nine men escaped from Kenitra prison, 25 miles east of Rabat, the ministry said.

The ministry said in a statement, "All the measures have been taken to arrest the escaped detainees," adding that authorities were investigating how the prisoners broke free.

A security source claimed the prisoners escaped through a tunnel they dug out under their cells.

The escaped prisoners left a five-line letter, saying their breakout was the only solution to what they called injustice.