Sixty-five infants have been found so far this year, causing officials to fear the total will exceed the average of 100 per year.
Many of the infants are dead by the time they are found, and the government is asking police to treat the cases as murder or attempted murder.
reported that the most recently discarded baby was a newborn infant. The child was covered in a towel and piece of cloth, stuffed into a bag, and left along the side of a river.
Some people in the Muslim-majority country blame internet pornography, bad parenting, and an over-exposure to western culture for the increase in unwanted babies.
Some social workers say the fact that having a child out of wedlock is seen as deeply shameful drives many desperate women to abandon their babies.
One charity recently opened what is being called a "baby hatch," where women can safely and anonymously leave unwanted children.
Malacca, a southern state, thinks that allowing girls younger than 16 to marry would help. A school for pregnant teenagers was also suggested.