Ruling out corporate rivalry behind the attempt tosabotage industrialist Anil Ambani's helicopter, the police Monday claimed tohave cracked the sensational case and arrested two employees of the firm thatmaintained the chopper.

The police official also gave a clean chit to BharatBorge, the Air Works employee who had found pebbles and mud in the chopper'sgear box, and whose body was found on the railway tracks last Tuesday.

The two Air Works employees, who were arrested just before midnight Sunday,have been identified as S. Palraj Thevar and Uday Warekar, working as technicalhelpers. They were presented before a metropolitan magistrate and remanded tocustody till May 15.

"On the morning of April 23, around 10 a.m., Thevar and Warekar wereassigned the job of clearing the helicopter. At the time, taking advantage ofthe opportunity, Warekar planted seven small pebbles and some earth into thegear box," Maria said.

The stringent section deals with offences pertaining to illegally doingsomething to an aircraft in service which can damage or disrupt the aircraft onground or in air, or endanger its safety.

A brick was hurled at an aircraft parked outside the Air Works hangar Aug 27,2008. Two months later, fire-crackers were exploded inside the hangar in thevicinity of which some aircraft were parked.

Then again, there were loud explosions in the main electrical supply room Jan3. Security personnel discovered two-three cracker bombs which were set to blowoff and a can of petrol to set off a fire, Maria said.

There was a similar explosion March 6 followed by a minor fire, and crackerbombs and a can of petrol were found in an aircraft. "All the casesare being investigated by Santa Cruz Airport police," Maria said.