We present observations of non-stellar emission objects in the field of the ionizing cluster NGC 3603. Spectroscopic and Photometric observations are used to analyze the physical properties of these intriguing objects. They are globules, about 0.1 pc in diameter, with high electronic density, which present emission characteristics of planetary nebulae. Their total brightness as well as the age of NGC 3603 and the large amount of objects detected argue against the PN hypothesis. We discuss the possibility of external ionization and conclude that they are objects partially ionized by the central ionizing cluster (PIGS) of NGC 3603.Asociación Argentina de Astronomía