Guard killed in daylight robbery inside Robinsons MANILA, Philippines (UPDATE 7) – Suspected riding-in-tandem robbers conducted a daring daylight robbery inside Robinsons Galleria Mall in Ortigas Thursday morning, killing a security guard and injuring 3 others.

Robinsons Land corporate PR manager Roseann Coscolluela-Villegas said the mall was still closed when 2 suspects "forcibly entered the mall" before 10 am and went to the mall’s first level to rob a Security Bank guard who was allegedly delivering money.

"Atleast 2 armed men tried to rob the roving tellers of Security Bank in Quezon City at around 10 a.m. today. Police authorities responded to the alarm, which is part of the mall security setup, within 15 minutes," an official statement from Robinsons Land said.

Villegas said 2 security guards were injured during a shootout between the suspects and mall security. One of the guards later died while receiving treatment at Medical City in Pasig.

A radio dzMM report earlier said at least 2 mall employees were also injured after the suspects threw a grenade inside the mall.

The spokeswoman said the mall was closed for a few hours after the incident and has since reopened to the public.

A witness, identified only as "Raymart", said he was eating at Chowking Restaurant when the suspects wearing yellow green uniforms went inside the mall Thursday morning and started shooting at guards near the Robinsons Bank.

"Hindi siya normal na putukan. Medyo nagtagal. Malapit lang sa shopping area yung putukan," he told Mornings@ANC.

“Nagstart ang putukan hindi sa labas, sa loob talaga,” he added.

He said he dropped to the floor when he heard rapid gunfire. He said the shooting lasted a long time, followed by an explosion.

“I don’t know how [the robbers] got in the mall. They were already inside the mall when the shooting started,” he said.

He said people hid inside the fast food kitchen for 30-45 minutes. He said they were only allowed to leave the kitchen after they were given the all-clear.

DZMM correspondent Arnell Ozaeta said at least one grenade did not explode and could be seen outside the mall. The robbers fled onboard a motorcycle.

The explosion and gunfire caused panic as people fled the area. All stores inside the mall have been closed and people have been prevented from entering.

The Metro Manila Development Authority posted an advisory in its Twitter account, warning motorists of heavy traffic near the Galleria entrance on the northbound lane of EDSA.