Oil giant BP PLC (BP) said Monday the costs of compensating and cleaning up its massive spill in the Gulf of Mexico has now risen to $6.1 billion.

The news comes after the
U.K. company said Sunday that a test on the cementing operation needed to completely plug its troubled well was successful.

The well was temporarily sealed on July 15 after the explosion of a deepwater platform on April 20 caused a giant leak.

BP said in a statement Monday that "the cost of the response now amounts to $6.1 billion, "including the cost of the spill response, containment, relief well drilling, static kill and cementing, grants to the Gulf states, claims paid, and federal costs."

On June 16, BP announced an agreed package of measures, including the creation of a $20 billion escrow account to satisfy obligations arising from the oil and gas spill.

The company also said Monday that more than 103,900 payments for claims have been made, totalling $319 million, up from a previous estimate of $303 million.