The report did not give the cause of death.
Hlava was born on June 25, 1924 in Semily, northern Bohemia. He was trained at the nearby State Professional Glassmaking School in Zelezny Brod, and in 1948 graduated from the Academy of Applied Arts in Prague.
Throughout his career, Hlava exhibited mainly in the United States and Japan. He also designed mass-produced glassware.
In 1983, he created a glittering glass decoration of hanging icicles from the ceiling of the famous Laterna Magica Theater in Prague. A prize named after him is regularly awarded at international glass exhibitions in Kanazawa, Japan.
His later works were inspired primarily by nature and the vegetation of the gardens surrounding his home in Prague.
Hlava's funeral will be held in Prague on March 4.