Authorities today were investigating a recent series of BB or pellet gun shootings that damaged several vehicles on various Southland freeways, including one that occurred this morning in the Cerritos area.

The latest shooting happened at 6:53 a.m. Thursday on the westbound 91 Freeway near Norwalk Boulevard, according to the California Highway Patrol.

Another shooting was reported Wednesday night, also on the 91 Freeway in Cerritos, in which a white sedan was left with several dozen holes and dents in its hood and windshield, according to CBS2.

The driver, Michael Hernandez, told Channel 2 he saw a flash before hearing his windshield crack. Hernandez said he believed his car was hit by a BB or pellet a couple of months ago as well.

On Tuesday, a possible BB or pellet gun shooting was reported in Downey that damaged several windows on a double-deck bus taking Verbum Dei High School soccer players and staff from Los Angeles, Channel 2 reported.

The bus was going east on the 105 Freeway, west of Paramount Boulevard, in the carpool lane about 4 p.m. Tuesday when an upper deck passenger told the driver a window had been shattered.

When the bus arrived in Santa Fe Springs, the driver called 911 after seeing three of the windows had been damaged. CHP investigators say the damage was consistent with a BB or pellet-type gun.

Many of the shootings have occurred in the Inland Empire, including one that happened about two hours after the bus was shot at in Downey. The driver of a van reported having his windows shattered after being shot as he drove on the 91 Freeway in Riverside. That shooting was followed about an hour later by another incident, also on the 91 Freeway, at Tyler Avenue.

It was not known if the shootings involved the same suspect. Descriptions of the shooter have varied, and authorities were trying to determine whether the shots were fired from a moving vehicle.