Police spokesman Richard French says officers had been looking for Littlejohn for months in connection to the Oct. 29 shooting at the Adat Yeshurun Valley Sephardic Synagogue at 12405 Sylvan Street.
In that attack, two men, 38-year-old Maor Ben-Nissan and 53-year-old Allan Lasry, were shot in the legs in the underground parking garage of the synagogue as they arrived for a morning prayer service. Both men survived.
Littlejohn was arrested by Beverly Hills SWAT officers in the vicinity of Nordhoff Street and Balboa Boulevard . He remains in custody at the Beverly Hills jail in lieu of $2 million bail.
Officials said Adat Yeshurun is an Orthodox synagogue of Moroccan descent, and a hub for the Jewish community.
Associated Press contributed to this story