Community leaders in Scotland appealed for calm after Glasgow police said there had been dozens of racially motivated incidents since the attack on the city's airport Saturday.

At least two of the eight suspects caught so far rented a house a few miles from the airport where two men crashed a gas-laden Jeep Cherokee into barriers outside a terminal the day after two car bombs failed to explode in London, several British news outlets reported, citing unidentified sources.

The two men slept upstairs and used the downstairs as a bomb factory, the outlets said. Officials would not confirm or deny the reports.

Denis O'Donnell of the local Paisley Cab Company told The Associated Press that his taxis had picked up suspect Bilal Abdulla, an Iraqi-born physician, from the house nearly 20 times since May.

Neighbor Susan Hay told the AP that police said they were "stripping" the home Thursday morning to look for fingerprints and other forensic materials. A large tent set up on Sunday was hanging over the garage.

Two other suspects were arrested at staff housing at the Royal Alexandra Hospital in Paisley.

A British security official said authorities were still investigating whether there were any suspects at large who may have on the peripheries of the plot. The official requested anonymity because he was not authorized to talk to the press.

There have been 38 racist incidents in the Glasgow area since the attack, police said, including beatings and an attack on a white youth by three South Asian youths who believed he was involved in a previous racially motivated attack. A South Asian-owned shop was also set on fire in Glasgow, police said. There were no serious injuries.

Muslim community leader Bashir Maan appealed for calm and said community relations remained strong. "We must remember these people were not from Scotland," he said of the suspects held.

Also Thursday, a subway derailed in the capital during rush-hour, leaving at least 37 people with minor injuries in an incident transport authorities believe was caused by an obstruction on the tracks.

Britain's terrorism threat level has been lowered following the capture of the eight suspects, and a British investigator arrived in Australia to question a detained Indian doctor.