Italy's government is cracking down on foreign fighters in the wake of the Paris terrorist attacks, passing a decree that allows police to mount surveillance operations for suspected jihadis and provides stiffer jail terms for recruits.

The decree passed late Tuesday also targets the so-called "lone wolf" terrorists who train themselves, since current legislation punishes only fighters trained by third parties.

It creates a new crime, punishing anyone who organizes, finances or promotes trips abroad to commit terrorist attacks with between three and six years in prison.

The package of measures also addresses access to information about terrorism, allowing law enforcement to order Internet providers to block access to sites that encourage terrorism and beefing up the penalties for anyone who instigates terrorist acts online.