British police said on Wednesday they had arrested two men in the northern English city of Manchester as part of a US investigation into a hostage taking at a synagogue in Texas earlier in January.
British police had previously said they had arrested four people over the incident: two teenagers in Manchester plus one man in Birmingham and another man in Manchester. The teenagers have been released without charge.
The day-long siege occurred on January 15 when a British man took four people hostage at a synagogue in Colleyville, about 16 miles northeast of Fort Worth, Texas.
The gunman died as federal agents stormed the temple while the four hostages were released unharmed.

Six killed in Swiss bus fire that police say may have been deliberate
US says it destroyed mine-laying vessels as Trump warns Iran over strait
Britain working with allies to support shipping through Strait of Hormuz
Wildlife to replace humans on next series of UK banknotes
