According to a report by FOX 25, two men on board an American Airlines flight, who were not sitting together, were detained by security officials.
The two, who were speaking Arabic were escorted off the plane as some marathoners on the flight were reportedly concerned, the channel's website reported.
The American Airlines flight was headed to Chicago. No further details were made available.
Two bombs exploded in the packed streets near the finish line of the Boston Marathon on Monday, killing three people and injuring more than 130 in a terrifying scene of shattered glass, bloodstained pavement and severed limbs at the world’s oldest and most prestigious marathon, authorities said.
A senior US intelligence official said two other bombs were found near the end of the 26.2-mile (42-kilometer) course.
The fiery twin blasts took place almost simultaneously and about 100 yards (meters) apart, knocking spectators and at least one runner off their feet, shattering windows and sending dense plumes of smoke rising over the street and through the fluttering national flags lining the course.
When the second bomb went off, the spectators’ cheers turned to screams. As sirens blared, emergency workers and National Guardsmen assigned to the race for crowd control began climbing over and tearing down temporary fences to get to the blast site.
23,000 runners took part in the Marathon, which is one of the most famous globally, while there were also more than 500,000 spectators.