Armed conflicts and attacks

• 2023 Azerbaijani offensive in Nagorno-Karabakh
  • Samvel Shahramanyan, president of the breakaway Republic of Artsakh, signs a decree to dissolve all state institutions of Artsakh beginning at the start of 2024. (CNN)
• 2023 Manipur violence
  • More than 80 people are injured during riots that occurred during protests over the murder of two Meitei students in Manipur, India. (Al Jazeera)
• 2023 Rotterdam shootings
  • Three people are killed in shootings and arson attacks at a teaching hospital and a nearby private home in Rotterdam, Netherlands. (NOS)
• Bombings in Sweden
  • It is reported that three people were killed this week in separate incidents in and near Stockholm, Sweden, as deadly violence linked to a feud between criminal gangs escalates. (Euronews)
  • Swedish Prime Minister Ulf Kristersson summons the heads of the armed forces and police in response to the gang violence, saying that "We will hunt the gangs, we will defeat the gangs". (Reuters)
• Jihadist insurgency in Niger
  • Jihadist insurgents kill at least ten Nigerien soldiers in Kandadji, Tillabéri Region, Niger. Seven soldiers are later killed and five others are injured in a vehicle accident while travelling to reinforce the army unit under attack. (Reuters)
• Mexican drug war
  • Six teenagers who were kidnapped by a group of armed men a few days ago are found dead near Villanueva, Zacatecas, Mexico. (El País)

Business and economy

• Swedish furniture maker Ikea opens its first store in Colombia, continuing its plan to establish nine stores in Chile, Colombia, and Peru within the next 10 years. (Reuters)

Disasters and accidents

• Tashkent Airport explosion
  • One person is killed and 162 others are injured in an explosion at a warehouse near the airport in Tashkent, Uzbekistan. (Al Jazeera)
• It is reported that a bluetongue disease outbreak in the Netherlands has spread to 319 sheep and cattle farming companies. (NOS)

Health and environment

• 2023 dengue outbreak in Bangladesh
  • It is reported that nearly 1,000 people have died of dengue fever in Bangladesh in recent weeks, in the country's most severe outbreak of the disease so far. (BBC News)

Law and crime

• The historic Sycamore Gap Tree in Northumberland, England, United Kingdom, also known as the "Robin Hood"-tree, is illegally cut down. A 16-year-old boy is arrested in connection with the incident. (BBC News)

Science and technology

• Gravitational interaction of antimatter
  • The ALPHA experiment shows that antimatter falls down in gravity, just like normal matter. (BBC News)

September 29: Michaelmas (Western Christianity); Mid-Autumn Festival in China (2023)

• 1011 – An army of Viking pirates that had besieged the English city of Canterbury for weeks took Archbishop Ælfheah prisoner and seized power.
• 1760 – The Williamsburg Bray School, the oldest-surviving school building in the U.S. dedicated to educating Black children, opened at Benjamin Franklin's suggestion.
• 1833 – The Spanish American wars of independence ended with the death of King Ferdinand VII, with what had once been the Spanish Empire disintegrating into independent Latin American states.
• 1940 – During a Royal Australian Air Force training exercise over Brocklesby, two planes collided and interlocked in mid-air (pictured); the pilot of the upper plane was able to land safely using the lower plane's engines.
• 1954 – Twelve countries signed a convention to establish the European Organization for Nuclear Research (CERN), which manages the world's largest particle physics laboratory.