HANOI, Vietnam (AP) — Vietnam has arrested two well-known democracy activists for posting articles critical of the government on the Internet.

Authorities said the pair were arrested Monday in the capital, Hanoi.

Nguyen Huu Vinh and Nguyen Thi Minh Thuy are accused of violating Article 258, which carries a maximum seven-year jail sentence.

Vinh is the founder of the widely read Basam blog, which publishes highlights of local press as well as dissident tracts critical of the government.

Basam’s U.S-based managing editor Ngoc Thu said Tuesday that the arrests were “groundless.”

Basam has been repeatedly targeted by hackers with suspected links to the Vietnam state over the last 18 months.

Vietnam routinely imprisons or harasses anyone campaigning for basic democratic freedoms.