The police are investigating two incidents involving the burning of political flags at Felda Selancar 2 here on Thursday.

Head of the Police Media Centre for the Rompin by-election, Supt Abdul Aziz Mahmud said the two cases were being investigated for mischief and damage.

Upon conviction, offenders are liable to be jailed a maximum of two years or fined, or both.

In a statement here Friday, Abdul Aziz advised all political supporters to abide by the law and cease creating tension amongst themselves.

He said a special task force was set up solely for crime prevention during the by-election.

The by-election is held following the death of incumbent Rompin MP, Tan Sri Jamaluddin Jarjis in a helicopter crash in Semenyih, Selangor on April 4.

The May 5 polling day for the Rompin parliamentary constituency which has 53,294 voters, will see a straight fight between Barisan Nasional candidate Datuk Hasan Arifin and PAS' Nazri Ahmad.