Apart from the five-month supply of communion bread, among other items missing was a guitar worth RM1,200 and also damages to RM5,000 worth of musical instruments.
Two 'samsu' bottles (alcohol beverage), one empty and the other half full were also found at the premises.
The discovery was made by a group of youths who were at the premises to attend their music class about 8pm on Wednesday.
It was believed that the burglars might have entered the premises through the roof due to the traces of ceiling plasters being tampered with, while three doors, curtains and a safe were also damaged.
A speaker set and some injection needles were also found left 'abandoned' at the premises' ceiling prompting speculations that it could be the work of drug addicts.
BCCM Chairman Voon Shim Shin, when met at the scene, said this was not the first time such incident has happened.
He claimed to have informed the management of the incident and hoped they would do something to beef up security in their premises.
On Dec 27 last year, burglars abandoned their plan to steal the St Augustine's Catholic Church's tabernacle, presumably because it was too heavy.
The burglars, however, were said to have made off with six speakers, one laptop and two fans, with damages estimated at RM7,000.