Australia has issued a travel warning for Thailand as protests turn violent ahead of next week’s general election.

Australians have been urged to avoid all polling places, political rallies, protests and processions through the capital Bangkok.

This includes streets near protest locations that have been closed to vehicles and converted into outdoor markets.

“Thailand has the Australian government’s support as it tries to find ways to settle its political difficulties,” Foreign Minister Julie Bishop said in a statement on Friday night.

The warnings come after gunmen opened fire near several opposition protest sites in Bangkok, stoking tensions in the capital as Thailand’s embattled prime minister flies to her political stronghold in the north.

Danger zone

A dangerous new chapter appears to have been opened in a nearly four-month political crisis that has left 22 people dead and hundreds wounded, with almost daily reports of gunshots and grenade blasts in the capital recently – often targeting protesters.

Police said unknown gunmen fired sporadically early on Wednesday for about an hour in three areas of Bangkok where demonstrators are camped out alongside upscale shopping malls and luxury hotels. Nobody was wounded.

“We don’t know which side fired the shots, but the aim of the gunmen is to intimidate,” deputy national police spokesman Anucha Romyanan said.

The spike in violence has been largely confined to areas close to the opposition rallies, which tourists have been urged to avoid, particularly after dark.

But foreigners can still be seen wandering around several protest sites, which often resemble street markets and sit next to major hotels, shopping malls and Lumpini Park.

‘Time to go’, say opponents

Prime Minister Yingluck Shinawatra is under intense pressure to step down, with the protesters calling for an unelected “people’s council” to tackle what they see as corruption and a culture of money-driven politics.

Her supporters say they will not accept the removal of an elected government by the protesters, military or the courts, raising fears of a protracted standoff.

Yingluck has been summoned by an anti-graft panel on Thursday to hear charges of neglect of duty in connection with a rice subsidy scheme that the opposition says is rife with corruption.

If found guilty, she could be removed from office and face a five-year ban from politics.

Yingluck flew to the northern city of Chiang Rai on Wednesday to inspect government-backed projects, saying she might not attend the National Anti-Corruption Commission (NACC) hearing.

“I have not yet made up my mind,” she told reporters when asked if she would face the panel, which her party has accused of being politically motivated.

NACC commissioner Vicha Mahakhun said Yingluck’s lawyer had informed the panel that he would represent her at the hearing.

“If she doesn’t show up we can send the documents by registered mail,” Vicha said.

Nowhere to hide

Officials denied the premier was on the run from protesters, who have vowed to pursue her wherever she goes. They besieged state buildings where she has held cabinet meetings since the occupation of her headquarters in December.

“She is not avoiding the political situation in Bangkok,” said Transport Minister Chadchart Sittipunt.

More than 700 people have been wounded in street violence since demonstrators took to the streets in late October seeking to curb the political dominance of Yingluck’s billionaire family.

The opposition blames Yingluck’s followers for the violence, while government supporters accuse the demonstrators of trying to incite the military to step in.

Four children were among those killed in two separate grenade and gun attacks on opposition rallies in Bangkok and eastern Thailand over the weekend, drawing widespread condemnation.

On Wednesday, United Nations Secretary General Ban Ki-moon said through a spokesperson that he was “increasingly concerned” about the crisis, and condemned the violence, calling for dialogue.