The police are investigating the arson attempt, which resulted in minor damages, and a number of witnesses have been interviewed.
The firebombing is believed to have taken place around the same time three other churches were hit - the Metro Tabernacle Church in Desa Melawati, the Assumption Church and Life Chapel Church, both in Petaling Jaya.
All three churches were attacked by unknown assailants between midnight and the early hours of the morning yesterday.
The ground floor of the three-storey Metro Tabernacle Church was gutted while the other two churches suffered minor damages.
However, inspector-general of police Musa Hasan said he could not absolutely confirm that this was indeed the fourth attack on churches in the Klang Valley.
Musa, who visited Metro Tabernacle Church this afternoon, also added that he was uncertain regarding the time of this supposed attack.
"The complainant saw glass on the floor outside the church and so he lodged a police report. This is believed to be the fourth incident," he told reporters while accompanying Prime Minister Najib Abdul Razak in inspecting the damages to Metro Tabernacle.
The Good Shepherd Lutheran Church, which is in Jalan Utara, Section 52 in Petaling Jaya Old Town, is located near the Assumption Church.
Top cop get crank calls
Musa also revealed that since making his mobile phone number public yesterday, he had received 900 calls and 800 SMS.
Many of which were well-wishers, concerned citizens and but a few were crank calls.
"There was one person who called and just kept quiet," said the police chief.
On the Metro Tabernacle case, Musa said the police were in the process of determining the nationality of the alleged arsonists.
"A witness is helping us (with the investigation)," he said.