Assailants disguised as Costa Rican Red Cross workers entered the aid group's installations in the southeastern San José district of Zapote Sunday afternoon and stole ¢11.6 million (more than $20,000) in cash set aside for humanitarian services, according to the Red Cross.

The thieves possibly consisted of four people, including a getaway person waiting outside, Red Cross spokesman Freddy Roman said yesterday.

The money had been raised through Tico Bingo ticket sales, he said, adding that the aid organization is still surveying the offices – 100 meters west of Casa Presidencial – to see if any other valuables went missing.