The European Central Bank’s plan of large-scale asset purchases is open ended and won’t be closed in a “hasty” manner, ECB Executive Board member Benoit Coeure said in remarks to reporters Monday.

The central banker said that the program to buy 60 billion euros ($67.7 billion) a month in assets was intended to continue until September 2016.

“We’ve also said that this would be done until we see a sustained convergence toward our definition of price stability,” he said. “Yes, it is an open ended program.”

The ECB aims for consumer price inflation to be just below 2% over the medium term.

Mr. Coeure said that if the program isn’t achieving this goal as September 2016 approaches, “Then we’ll do more.”

Moreover, he said, the ECB wouldn’t end the program prematurely. The ECB’s explanation that it intends to continue buying bonds well into next year is designed to send the message that it would refrain “from a hasty termination” of the program, he said.

Mr. Coeure refrained from making any specific comments about Greece, saying only that currently there is a political process taking place. “It is not time for the central bank to step in.”

During an earlier speech to a conference in Budapest, Mr. Coeure said the ECB’s “recent decision to expand our asset purchases, together with energy prices and an exchange rate more favorable to growth, have opened a unique window of opportunity for euro-area governments to act together, remove structural obstacles to growth, and pull our economy out of the low-growth, low-confidence trap.”

He said that countries that enact overhauls receive a “more expansionary monetary policy and a less contractionary fiscal policy.”

Mr. Coeure also said it made sense to “take into account structural reforms when assessing compliance with the [Stability and Growth Pact],”, as the European Commission now wants to do.

Mr. Coeure said that even though various economic actors, such as governments and central banks have their own mandates that they have to work within, there are “spillovers”, which can put more pressure on policy.

“If any of the actors don’t do what they have to do, then they may force other actors to do more, even within their mandate…which of course matters enormously for monetary policy,” he said.

More specifically, he said “If we have weak banking supervision, then banks are not in a position to pass monetary signals to the economy to pass interest rate cuts to the economy, and monetary policy may have to do more.”