Starbucks sub has closed all 50 of its coffee shops in Jakarta after a series of coordinated attacks on Thursday claimed by terrorist group ISIS killed at least two in the Indonesian capital.

The assailants first struck a police traffic post on a busy street, then detonated explosives in an apparent suicide attack outside a Starbucks coffee shop nearby, the New York Times reported.

“We are deeply saddened by the senseless act that has taken place in Jakarta; our hearts are with the people of Indonesia,” Starbucks said in a statement.

One customer was injured, the company said, but all of its employees are safe. The coffee shop in question will remain closed indefinitely, but Starbucks said its other Jakarta stores will reopen on Friday. Speaking at a media event in Mumbai, India, CEO Howard Schultz, said, “We are living in a time of great uncertainty and fragile nature. This is a senseless act of violence and terrorism that many of us cannot process,” according to Bloomberg.

Starbucks opened its first store in Indonesia in 2002 and now has about 200 locations in the country.