BUTTERWORTH, Nov 10 — The Penang Water Supply Corporation (PBAPP) has tightened security and stepped up patrols along the Pokok Sena Canal here following incidents of... In a statement today, PBAPP said the incidents came to light during a routine security patrol by its auxiliary police, with subsequent checks revealing that several infrastructure components in the canal area had been damaged or were missing. PBAPP subsequently lodged a police report at 1.