Police in Albuquerque, N.M., arrested Solomon Peña, a former Republican candidate for the state House of Representatives, on Monday in connection with multiple shootings at local Democratic politicians’ homes, authorities said.

Albuquerque Police Chief Harold Medina said Peña is accused of conspiring with and paying four other men to shoot at the homes of two county commissioners and two state legislators. After a short standoff with the local SWAT team, Pena was eventually arrested.

Six shootings took place between December 4th and January 5. The department is currently investigating them. Four of those have been linked to Peña, police said, and two others are still under investigation.

“It is believed that he is the mastermind behind this,” Medina spoke Monday at a press conference. per NBC News.

During one attack on Dec. 11, at least 12 bullets were fired at a county commissioner’s home, the Albuquerque Journal reported. During another shooting on Jan. 3, multiple shots were fired at state Rep. Linda Lopez’s home, including three bullets that went through her 10-year-old daughter’s bedroom.

Peña launched an unsuccessful Place your bid New Mexico’s 14th House district in 2022, losing by 47 percentage points to his Democratic opponent, state Rep. Miguel Garcia. The Albuquerque Journal notes that Peña has continued to dispute the results of the race, claiming election fraud.

His bid was criticized after Garcia brought a suit against him to keep him out of office for his 2008 conviction. “smash and grab” robbery. The judge found that the local laws prohibiting felons being elected to office in his area were not constitutional. He was sentenced for seven years.