Uttara police arrested Ariful Islam and Moniruzzaman, two on-duty night guards of the under-construction Rangs Bhaban on road 12 in sector no 6, suspecting their connection with the robbery.

A group of 10/12 criminals entered the Rangs Bhaban breaking two locks at the main entrance to the one-storey building when both of the on-duty night guards were out between 4:15am to 4:30am, police said.

The robbed electronic equipment includes eight television sets, CD and VCD players and a number of digital cameras.

The night guards told police that they went out to respond to the call of nature, and on return they found the entrance to the Rangs Bhaban open and the showroom robbed.

They also saw a pick-up car speeding away at around 4:30am just when they noticed the showroom entrance open, the guards said.

There were electronic materials worth Tk 70 lakh in the showroom.