The tragic incident occurred at an apartment block in the Kimmage area at approximately 7pm this evening.
Emergency services were called and discovered the child, believed to be a three-year-old boy, with suspected stab wounds.
It’s believed the child was found in an upstairs bedroom.
An adult female (early 40s) was also injured in the incident was found downstairs and has been taken to St. James Hospital where her condition is described as serious.
The woman and child are of Iranian descent and the woman is believed to work in a Dublin hopsital.
The discovery was made when Gardaí were called to a house in Poddle Park. The infant was pronounced dead at the scene.
The State Pathologist has been notified and the Garda Technical Bureau bas been requested to examine the scene. The scene is currently preserved.