Ueno Zoo announced the birth of its first giant panda in five years on Monday.

Shin Shin, 11, gave birth to a cub at 11:52 a.m., and the mother was confirmed to be holding the cub later in the day, said Mikako Kaneko, a section chief at Ueno Zoological Gardens in Tokyo.

Because Shin Shin has been holding onto the baby, the zoo hasn¡¯t been able to confirm its sex or weight, but it probably weighs around 150 grams, Kaneko said.