Four people have been killed and 12 others injured in an explosion that hit a parking lot of a hotel in the Pakistani city of Quetta, local deputy commissioner Aurangzeb Badini said on Wednesday.
However, police said that initial investigation revealed that the explosive device was planted in a vehicle that was parked in the hotel's parking area.
Initial investigation has revealed the explosion was caused when explosive material, fitted inside a vehicle was detonated, said police.
Security forces rushed to the Serena hotel and no one was being allowed to go near the site of the blast.
Tehreek-e-Taliban Pakistan claimed responsibility.
No group immediately claimed the attack.
Officials said that Chinese ambassador and other Chinese officials were staying at the hotel but were not present in the hotel when the blast took place in the parking lot.
Death toll from bomb blast near Quetta's Sereena Chowk has climbed to five after an injured succumbed to his wounds during treatment at a private medical facility, ARY News reported.
Experts believe the Serena Hotel attack highlights the ongoing threat to Chinese interests in Balochistan. Chinese citizens have come under attack many times in Balochistan, mainly at the hands of Baloch separatists.
Interior Minister Sheikh Rashid Ahmad told Pakistani broadcaster ARY News TV that "a auto that was full of explosives exploded in the hotel" while news agency AFP cited him as saying it was "an act of terrorism".
Jam Kamal Khan, chief minister in Baluchistan, took to Twitter to condemn the bombing.
Balochistan Inspector General Muhammad Tahir Rai told the media that neither the Chinese ambassador nor other members of any foreign delegation were staying at the hotel when the blast occurred.
The federal minister added that India does not want peace in Pakistan, but their attempt to damage Pakistan will fail. Pakistan's militant groups are often interlinked with those across the border in Afghanistan.