Comment: Which is more likely:

1.) Unknown Islamists (that is, they're pro-Islam, ardently so) terrorists blow up two mosques with pre-placed bombs in two different countries at the same time, for no apparent gain, or
2.) A 'third force' directs terrorists whose atrocities target all 'sides' within target countries, thus keeping them under a 'strategy of tension', disincentivizing foreign investment and development, and providing 'markets' in which foreign mercenaries - usually Western - can 'sell' their expertise, i.e. killing people?

3 killed, 30+ injured after blast rocked mosque full of Friday worshippers in Afghan capital

RT, 24 May, 2019
bomb attack kabul mosque
© Omar Sobhani / Reuters
Afghan security forces keep watch outside a mosque where a blast happened in Kabul, Afghanistan May 24, 2019.
Three people have been killed and 32 others injured as an explosion rocked a mosque full of people during Friday prayers in the Afghan capital Kabul, according to health officials.

The death toll in the attack in Kabul was confirmed by a spokesperson for the Ministry of Public Health.

One of the people killed in the attack has been confirmed as well-known religious scholar imam Mawlawi Samiullah Raihan. The cleric was known for supporting the Western-backed Afghan government, which is opposed by Taliban militants.

The bomb was apparently planted in the microphone used by the imam, according to Jan Agha, a district police official.

President Ashraf Ghani condemned the mosque attack as a terrorist act.

So far no group has claimed responsibility for the attack, but the Taliban and Islamic State (IS, formerly ISIS) are well-known for similar attacks in Kabul.

The district where the explosion happened is dominated by ethnic Pashtuns, most of whom are Sunni Muslims, who make up the majority of the Taliban group.

Comment: Meanwhile, at almost exactly the same time...

2 killed, 15 injured after blast inside mosque in Pakistan

RT, 24 May, 2019
bomb attack terror quetta
© Naseer Ahmed/Reuters
Local police official Tauseef Farman told Al Jazeera the explosive device went off next to the prayer leader, who was among those killed.
At least two people were killed and more than a dozen injured after a bomb exploded inside a mosque during Friday prayers in Quetta, Pakistan, according to a rescue source quoted by Geo TV.

The device was hidden near the Rehmania Mosque's pulpit, state-run Radio Pakistan said, citing police.

The mosque's administration told reporters that there were around 30 to 40 people inside the building at the time of the incident.

The deputy inspector of police said that three of the injured are in critical condition. Women and children are said to be among those hurt in the blast.

Balochistan Chief Minister Jam Kamal Khan has condemned the incident and ordered an investigation. No group has yet claimed responsibility.

Sectarian violence often targets the Shia Muslim minority in Pakistan, however, this explosion took place in a Sunni majority area in a mosque attended by Sunni followers.