SKOPJE, Macedonia (AP) — Human Rights Watch has sent a letter to Macedonian Prime Minister Nikola Gruevski, urging his conservative government to investigate a spate of recent attacks targeting gays.

The U.S.-based rights group, in the letter sent Wednesday and forwarded to The Associated Press, said the government hadn't done enough to protect its citizens from "anti-gay thugs" and hadn't spoken out in public against the attacks.

Gays and lesbians in Macedonia were targeted amid recent pride events in the capital, Skopje, including mob attacks in June outside the home of an openly gay actor and against a support center for gays. The center was also damaged in a July 5 arson attack, the group said.

There was no immediate reaction to the letter from the Macedonian government.