MANILA -- The Philippine National Police (PNP) on Tuesday conducted a command conference in Camp Crame to come up with measures on how to improve security in malls this holiday season.

Interior and Local Government Secretary Mar Roxas attended the conference in the light of the daring robbery in a jewelry shop at SM North Edsa Sunday evening.

Roxas said all holiday leaves of PNP personnel have been cancelled to ensure that all of its uniformed personnel will be utilized in police visibility.

Roxas also said that they already proposed to mall owners to come up with measures to ensure that the incident last Sunday will not happen again.

One such measure is that customers of stores in malls selling tools will have to wait outside the mall to get their purchased tools such as hammers and crowbars, which can be used by criminals in robbing stores.

The DILG secretary admitted that the same measure was proposed by the PNP after the SM Megamall robbery in a jewelry store last January, but mall owners allegedly failed to come up with a commitment to develop such a policy.

This time, to ensure that the robbery incident will not happen again, Roxas proposed that local government units in Metro Manila come up with ordinances that will support the practice of the said security measure, which can be used as a basis before malls can be given business permits to operate.

Meanwhile, Quezon City Police District director Chief Supt. Richard Albano said investigators are now zeroing in on three groups who may be behind the daring robbery.

Albano said the FNC jewelry shop has yet to come up with a report regarding the official amount of jewelry carted away by the robbers.