(Reuters) -German real estate company Alstria Office REIT AG said on Wednesday it was aware that Canadian investment firm Brookfield might be exploring a potential takeover offer. Alstria is currently not in negotiations with Brookfield about a potential takeover offer, it added. Bloomberg News earlier on Wednesday reported here that Brookfield was working with advisers to evaluate a potential bid, sending Alstria"s shares 9% higher. Alstria owns about 120 office properties in major cities including Hamburg, Frankfurt and Berlin, where workers are returning as Germany eases its COVID-19 lockdown measures. The company has a market value of about $3.56 billion, with Brookfield having an 8.35% stake as of July 1. Brookfield declined to comment. Last month, Brookfield had agreed to buy UK-based infrastructure services company Modulaire Group for $5 billion. (reut.rs/2UzA7xd) Reporting by Ankit Ajmera in Bengaluru; Editing by Ramakrishnan M. and David Evans