Cairo - A previously unknown pyramid estimated to be 4,300 years old was discovered in Egypt's Saqqara desert, Egypt's Secretary General of Antiques Zahi Hawass announced on Tuesday.

According to Hawass, the pyramid is five metres high with a square base of 22 metres on each side, and is believed to belong to Queen Seshseshet, mother of King Teti, the first king of ancient Egypt's Sixth Dynasty.

It is the 118th discovered pyramid, said Hawass in a press conference. (dpa)