The U.S. car service, which allows people to summon rides at the touch of a button, plans to use the money to build its presence in international markets, improve safety and invest in research and development, according to Bloomberg, which first reported the news.

The company is also in talks to raise $600 million under its series E funding round, the source told Reuters.

Uber said in December that it raised $1.2 billion in its latest round of funding and had additional capacity for strategic investments, valuing the U.S. taxi service firm at $40 billion.

A spokesperson for Goldman Sachs confirmed the news.

An Uber spokesman did not respond to an email asking for comment.

(Additional reporting By Lehar Maan in Bengaluru; Editing by Simon Jennings)

By Sarah McBride