The Toyota Grand Prix of Long Beach, a racing festival that typically draws more than 170,000 spectators over three days, is tightening security for this weekend's event in the aftermath of the Boston Marathon explosions.
Officials "will be working in conjunction with the Long Beach Police Department, fire department, city and other agencies to take the appropriate measures to provide for the safety of our fans, workers and participants," said Jim Michaelian, who oversees the event as chief executive of the Grand Prix Assn. of Long Beach.
He declined to reveal what the measures include.
The event's crown-jewel race is the grand prix itself Sunday, the third race of the year on the Izod IndyCar Series schedule.
Before the grand prix, there also is a race between drivers in IndyCar's second-tier Indy Lights series Sunday morning, and after the grand prix is the Pirelli World Challenge sports-car race Sunday afternoon.