The report said the weekend attacks on two oil tankers and strikes by Yemen’s Iran-backed Houthi movement on Saudi Arabia fueled investor concerns about future regional oil supply disruptions.

Brent crude prices jumped 76 cents, or 0.73%, to $105.48 a barrel at 7:04 p.m. EDT Sunday. U.S. West Texas Intermediate (WTI) crude futures increased 59 cents, or 0.64%, to $92.44 a barrel.

Houthi fighters claimed responsibility for a missile attack on Riyadh’s international airport Saturday that killed 13 people and wounded more than 300 others.

Saudi police announced another death and further injuries Sunday in a second attack on the airport.

The Federal Aviation Administration (FAA) cautioned U.S. airlines on Sunday to exercise extreme caution flying in or above Saudi airspace, citing increased security threats stemming from the ongoing military conflict and disruptions to navigation systems, Reuters reported.

A notification to airmen (NOTAM) by the FAA, effective through Dec. 10, comes after a series of strikes on Riyadh, the capital of Saudi Arabia, including a new wave over the weekend.”Threats could pose a potential risk to aircraft during all phases of flight, including overflight, arrival and departure,” the FAA said.

— The Pakistan Stock Exchange (PSX) started the new work week on a negative note as the benchmark KSE-100 index fell more than 900 points in early trading.

The index was below the 166,100-point threshold soon after the market opened, indicating selling pressure in the market.

The stock market was mixed on the last day of trading of the last week before a late-session slide sent the benchmark index down 352 points to conclude at 167 089 points.

According to sources, the Federal Board of Revenue (FBR) has decided to impose fines on taxpayers providing inaccurate information in income tax forms, concealing assets or tampering with financial data.

Sources stated the FBR has data on properties and assets owned by tax filers around the country which will be used to check the information declared in their income tax forms.

The FBR will automatically match the data submitted in tax returns with the data already available in its database to discover any irregularities. Sources said that artificial intelligence (AI) will also be used to check information and discover probable abnormalities.

Taxpayers who were caught hiding assets or doctoring paperwork were told they would face hefty penalties, sources said. Sources stated income tax department could impose fines up to 75 per cent of salaries for salaried persons filing wrong income tax filings.

They said that a fee of Rs1,000 per day might also be imposed if the penalty was not paid within the stipulated period.

Tax filers have a chance to correct problems in their income tax filings before October 15. Sources advised the taxpayers to cross-check facts stated in their return, including income and asset details and make required revisions within the time limit.

The move comes as the FBR is ramping up the use of automated technologies and artificial intelligence to scrutinize tax returns and find differences between the information provided and the accessible data. Dawn, in an October 7 report, stated the FBR has suggested regulations for electronic assessment of individual tax returns so that its automated system can identify possible factual and legal mistakes before taking further action.