A week after the Costa Rican president declared a state of emergency in the country after the government computer systems were infiltrated, the ransomware gang now wants to overthrow the government.

The Russian-speaking Conti gang attacked Costa Rica in April, accessing multiple critical systems in the Finance Ministry, including customs and tax collection. Other government systems were also affected and a month later not all are fully functioning.

President Rodrigo Chaves declared a state of emergency over the attack as soon as he was sworn in last week. The U.S. State Department offered a $10 million reward for information leading to the identification or location of Conti leaders.

Conti responded by writing, "We are determined to overthrow the government by means of a cyber attack, we have already shown you all the strength and power, you have introduced an emergency."

The gang also said it was raising the ransom demand to $20 million. It called on Costa Ricans to pressure their government to pay. The attack has encrypted government data and the gang said Saturday that if the ransom wasn't paid in one week, it would delete the decryption keys.

The U.S. State Department statement last week said the Conti group had been responsible for hundreds of ransomware incidents during the past two years.

"The FBI estimates that as of January 2022, there had been over 1,000 victims of attacks associated with Conti ransomware with victim payouts exceeding $150 million, making the Conti Ransomware variant the costliest strain of ransomware ever documented," the statement said.