MADRID, May 30 (Reuters) - Zara founder Amancio Ortega

has bought an office building in Barcelona from Blackstone for

250 million euros ($283 million), two sources familiar with the

transaction said on Friday.

Blackstone sold the 28,000-square-metre building on Avenida

Diagonal, currently rented by the Spanish editorial business

Planeta, to Ortega's investment vehicle Pontegadea, the sources

said.

Pontegadea and Blackstone did not comment about the

agreement.

Pontegadea, which owns more than $20 billion of real estate

assets, has invested in several office towers and luxury

buildings in Europe and North America.

It has also diversified its portfolio by buying energy and

logistics assets.

Ortega controls 59.29% of Zara-owner Inditex through

Pontegadea Inversiones and Partler Participaciones.

($1 = 0.8826 euros)