Bob Clark, the director of film classics 'Porky's and 'A Christmas Story', has been killed in a car crash in LA, alongside his 22-year old son Ariel.

The BBC reports that a police spokesman said the driver of the other vehicle involved, who escaped with minor injuries, was being investigated on suspicion of driving without a licence and being under the influence of alcohol.

Clark, who was 67, specialised in horror films and thrillers. His other titles include the likes of 'Children Shouldn't Play With Dead Things', 'Murder by Decree', 'Breaking Point' and 'Black Christmas'.

But he was most famous for 'Porky's', which is often cited as one of the first "gross-out" comedies, while 'A Christmas Story' has become something of a seasonal tradition in the US.

Scott Schwartz, who played Flick in 'A Christmas Story', said he was devastated at news of Clark's death.

Speaking to the BBC he said Clark was "one of the nicest, sweetest guys that you'd ever want to come in contact with".