Police in St. Louis County are investigating another laser strike on aircraft.
The St. Louis Post-Dispatch reports that a green laser hit a police helicopter flying over the Webster Groves area Thursday night. Pilots could not find the source of the laser beam, and no arrests have been made.
Just last month, 26-year-old Justin Stouder of Hazelwood publicly apologized for pointing a green laser at another police helicopter in April 2010, temporarily blinding the pilots. He was never formally charged but spent a year on probation.
The Federal Aviation Administration reported more than 2,800 laser strikes nationwide in 2010.