Mobile payments start-up Square has attracted a $25m Series D investment from US-based coffee retailer Starbucks.

Square, the San Francisco-based mobile payment company, has attracted $25m in investment from US-based coffee retailer Starbucks in a deal that will also see Starbucks adopt Square’s payment technology across its near 7,000 US stores.

The $25m investment will be part of a larger Series D round. It was reported last week that Square was close to finalising a $200m deal led by private equity investor Suhail Rizvi that would also be part of the financing round. The deal with…