sudheer khamitkar , shot his wife , smita haval khamitkar , and their sons arnav khamitkar , 10 and arush khamitkar , six , earlier this week .
their bodies were found after mrs khamitkar 's employers , american airlines , requested a welfare check when she failed to turn up to work .
police say they still do not have any motive but are speaking to mr khamitkar 's employers ; he recently switched jobs , they said .